Marking composition based on inorganic luminophors, method of metal products marking and metal product. RU patent 2493192.
 Light-converting biostimulant material and composition for production thereof / 2488621Invention relates to light-converting coating material for greenhouses and a composition for producing said material and can be used in agriculture and plant growing to grow plants in protected ground. The light-converting coating material consists of an optically transparent base and a light-converting composition which is deposited on the base and consists of a polymer matrix and a phosphor. The phosphor is semiconductor nanocrystals which are made of a semiconductor core and at least one semiconductor cladding such that the particle size of the nanocrystals in the light-converting composition ranges from 1 nm to 100 nm. |
 Luminescent complexes of rare-earth elements with pyrazole-containing fluorinated 1,3-diketones and method for production thereof / 2485163Invention relates to novel complexes of rare-earth elements, which can be used as active layers of organic light-emitting diodes, optical-electronic devices as well as fluorescent labels and markers. Disclosed is a luminescent complex of rare-earth elements of formula [Ln(L1)3L2] (I), where Ln is an ion of a trivalent rare-earth element, L1 is a diketonate ligand - a derivative of 3-polyfluoroalkyl-1-pyrazolyl-1,3-propanediol of formula (II), where RF is CH2F, CHF2, CF3, fluorinated alkyl, cycloalkyl or aryl, L2 is an auxiliary bidentate N, P or O-containing ligand. A method of producing compound (I) is also disclosed. |
 Method of predicting photostability of colloidal semiconductor quantum dots with nucleus-shell structure in oxygen-containing medium / 2461813Invention relates to a method of predicting photostability of colloidal semiconductor quantum dots with a nucleus-shell structure in an oxygen-containing medium, involving measuring kinetics of a photoluminescent signal of quantum dots for the tested and reference batches, determining for said batches values of a parameter which characterises the rate of decay of the photoluminescent signal over time. The rate is characterised by that quantum dots are pre-deposited on the surface of a solid substrate, and said measurement is carried out in a gaseous medium containing ozone with fixed concentration. Further, a higher level of photostability of the tested batch relative the reference batch is predicted with the ratio of values of said parameter corresponding to decrease in the rate of decay of the photoluminescent signal for the tested batch relative the reference batch and vice versa. |
 Luminous body / 2445340Inorganic composition for producing electroluminescent material contains the following, pts.wt: 80-95 semiconductor compound consisting of group II and group VI elements; 0.001-3 iridium source or a combination of an iridium source and at least one source of metal other than iridium; 3-9 activator. To obtain electroluminescent material, the inorganic composition is subjected to an explosion using a propellant and/or blasting explosive in a sealed vessel followed by thermal treatment. The obtained electroluminescent material is used as a light-emitting layer between electrodes of an inorganic electroluminescent device whose brightness when excited with direct current is equal to or higher than 10000 cd/m2. |
 Heat-resistant polymer nanocomposite having bright photoluminescence / 2434045Nanocomposite has a thermoplastic copolymer as a polymer matrix. At the step of preparing a composition or moulding the article, nanosized silicon is added to the copolymer as a light-converging component in amount of 0.001-1.5 wt % with particle size 1-5 nm, said component containing silicon dioxide in the surface layer of the core. |
 Carbide-silicon nitride luminophores / 2430948Luminophore consists of crystal lattice of seed material with activating additives representing ions Eu2+, Tb3+ and/or Eu3+. Said seed material, when excited by high-energy excitation radiation, absorbs at least portion of said excitation radiation to, then, emit radiation with lower power. Note here that seed material lattice represents carbide-silicon nitride compounds not containing cerium as activating additive. Invention covers also luminophore with its seed material lattice represents compound with general formula Ln2Si4N6C, where Ln stands for element or mix of elements selected from group including yttrium, lanthanum, gadolinium and lutetium. |
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Method of obtaining two-layer fibrous scintillator / 2411280 Invention relates to scintillation materials, specifically to two-layer fibrous scintillators for detecting slow neutrons and suitable for making scintillation fibrous detectors for radiation environmental monitoring, for monitoring space and industrial neutron background, for making systems for monitoring nuclear fuel and articles made from fissile materials, as well as for making antiterrorist radiation monitoring systems. The method of making two-layer fibrous scintillator involves heating core and cladding material at 180-190°C, pressure 150-180 kg/cm2 and then moulding the two-layer structure of the fibre through extrusion at a rate of 1.0-1.5 m/h. The material of the core of the scintillator contains the following in wt %: silver chloride 5.0-10.0; silver bromide 87.5-85.0; silver iodide 0.5-1.0; thallium (I) iodide 7.0-4.0, and the cladding material of the scintillator contains the following in wt %: silver chloride 18.0-20.0; silver bromide 80.5-79.4; silver iodide 0.1-0.5; thallium (I) iodide 0.5-1.0. The invention enables to obtain a new generation of flexible long two-layer fibrous scintillators with fluorescence spectrum maximum between 600 nm and 800 nm. |
 Valuable document / 2407771Counterfeit protected paper, protective element or valuable document contains a luminophor of general formula XZO4, in which X denotes YbLacPreNdfErnYbpFe(III)v, where b + c + e + f + n + p + v=1, and each of indices b, c, e, f, n, p, v assumes a value between 0 and 1, where either n≠0 and p≠0, or f≠0 and p≠0, or n≠0and f≠0, Z denotes NbzaTazbPzd, where za + zb + zd = 1, and each of the indices za, zb and zd assumes a value between 0 and 1. The luminophor can be added to printing ink, can be deposited on a surface or entered into the volume of the valuable document and can be embedded into the composition of melange fibres, protective threads. The valuable document can be made from paper or a polymer, the protective element can be made in form of a strip, tape, thread, plate, melange fibre or label. To authenticate the document, duration of luminescence or wavelength and/or number and/or form and/or intensity of the line of the radiation emitted by the luminophors and/or the band exciting radiation is analysed. The lines of radiation emitted by the luminophors and/or bands of exciting radiation form a code. |
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Light-converting material and composition for producing said material / 2407770 Described is light-converting material containing a matrix and at least one composite which converts UV radiation to radiation of a different colour, with particle size from 10 nm to 1000 nm, selected from a group ZnO:Zn and rare-earth element compounds of formula: Mex aAy bRz c , where Me denotes a metal, selected from a group comprising yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, aluminium, bismuth, manganese, calcium, strontium, barium, zinc or mixture thereof; A denotes a metal selected from a group comprising cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, terbium, ytterbium, titanium, manganese; R is an element selected from a group comprising oxygen, sulphur, boron, titanium, aluminium and/or compounds thereof with each other; a, b and c denote the charge on the Me ion, A or R, respectively, x≥1, 1.0 ≥ y ≥ 0.0001, z is defined by ax + by = cz. The invention also describes a composition for producing said material, containing the following in wt %: said composite - 0.001-10.0; matrix-forming component - the rest. |
 One-component uv-radiation phosphor / 2364976Invention relates to electrical engineering, in particular to one-component UV-radiation phosphor that can be used in fluorescent lamps for skin sunburn and feature common composition (Y1-x-y-zLaxGdyCez )PO4, where x varies from 0.001 to 0.98, y varies from 0 to 0.1, z varies from 0.01 to 0.2, while x+y+z<1. When excited by 254 nm-radiation, phosphor radiates in UV A and B ranges. UV A-to-B ratio can be varied by adjusting relative quantities of Y and La. |
 Method of increasing stability of aqueous solution of quantum dots - cadmium selenide nanoparticles coated with mercapto acids / 2484116Aqueous solution of quantum dots based on cadmium selenide coated with mercapto acids is stabilised by adding sodium sulphite until achieving its concentration of 0.02-0.2 mol/l in the solution. |
 Polymer nanoparticles containing medium for photon up-conversion / 2479616Polymer nanoparticles contain a medium for photon up-conversion and a stabilising agent. Said medium contains a polymer matrix having two organic components distributed therein. The first component is capable of absorbing light at a first wavelength in the range w≤λ1≤x and acts as a sensitiser in said medium. The second component is capable of emitting light at a second wavelength in the range y≤λ2≤z, where λ2≤λ1, and acts as an emitting component in said medium. The stabilising agent is selected from hydrophilic or amphiphilic polymers. |
 Polymer luminescent composition for obtaining white light excited by blue light-emtting diode / 2405804Polymer luminescent composition for obtaining white light excited by a blue light-emitting diode contains the following components, pts. wt: transparent polymer 100; photoluminescent phosphor based on garnet Y3Al5O12:Ce or Gd3Al5O12:Ce, or based on a mixture of said compounds 1.5-5.0; polyethylene wax in form of powder with particle size of 18-30 mcm 0.1-0.7; stabiliser 0.2-1.0. The transparent polymer used can be polycarbonate, polystyrene or a copolymer of styrene with acrylonitrile and butadiene. The stabiliser can be a compound from a group of sterically hindered phosphites. |
 Method for synthesis of semiconductor quantum dots / 2381304Invention relates to synthesis of nucleus- and nucleus-shell type semiconductor quantum dots through colloidal synthesis, which can be used in making different luminescent materials, as well as a base for making subminiature light-emitting diodes, white light sources, single-electron transistors, non-linear optical devices, photodetector and photovoltaic devices. The method for synthesis of semiconductor quantum dots based on chalcogenides of group II or group IV metals involves synthesis of nuclei of nanocrystals from a precursor containing chalcogen, and a precursor containing group II or IV metals, using an organic solvent and a surface modifier in form of (aminoalkyl)trialkoxysilanes. The nuclei are synthesised at constant temperature within the limits of 150 - 250°C for 15 s to 1 hour and the reaction mixture containing the nucleus of nanocrystals is further treated with UV light for 1-10 minutes and ultrasound for 5-15 minutes. |
 Method of obtaining luminescent nanoparticles of cadmium sulphide, stabilised with polymer matrices / 2370517Method is described for obtaining luminescent nanoparticles of cadmium sulphide, stabilised with polymer matrices, involving growing nanoparticles of cadmium sulphide directly in polymer matrices. A polymer compound, chosen from a series which includes polystyrene-block-polyethylene oxide, polystyrene-block-polyethylene oxide, polystyrene-block-4-vinylpyridine or polyphenylene, is dissolved, anionic surfactant is added to the obtained mixture with subsequent addition of a compound which contains cadmium cations, and then a compound which contains sulphur anions, and after growing cadmium sulphide nanoparticles excess anionic surfactant is removed. |
 Method for applying protective film on surfaces of phosphor particles / 2256254Proposed method that can be used for encapsulating phosphor particles to enhance their lighting and servicing parameters by producing continuous silicon dioxide film on their surfaces includes treatment of phosphor particles with 0.5 and 4 mass percent sols of polysilicic acid synthesized by hydrolyses of tetraethoxysilane in 0.6 - 0.8 mass percent aqueous solution of ammonia. |
 Method of preparing moisture-resistant particles of electroluminescent phosphor / 2247761Nitride coating precursor, in particular aluminum-, gallium-, or tin-containing metalloorganic nitride, is charged into reaction vessel 10a filled with electroluminescent phosphor, e.g. ZuS-Cu, and surrounded by heating means 30a using nitrogen as inert gas carrier. Precursor is passed through pipeline 32 open all over its length. Co-reagent, e.g. anhydrous ammonia is fed into lower part of vessel 12a through porous glass disk 12a. When vessel 10a is heated to 150-225°C, nitride coating precipitates on phosphor particles being in fluidized state. Phosphor bearing nonoxide coating is characterized by high brightness after 100 h use at high humidity. |
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Recording medium / 2492058 Invention relates to a recording medium. The recording medium comprises a substrate and a layer that receives ink deposited on the substrate, in which the arithmetic mean roughness Ra of the outer surface of the recording medium as specified in JIS B 0601:2001, is 1.1 mcm or more and 2.5 mcm or less, and the asymmetry Rsk of the roughness curve of the outer surface of the recording medium as specified in JIS B 0601:2001, is 0.1 or less. |
 Precipitated calcium carbonate pigment especially for use as ink-jet printing paper coating / 2486219Invention can be used to produce a pigment suitable in making paper for ink-jet printing. Precipitated calcium carbonate is obtained by mixing quicklime with water in a reactor or a tank with a mixer, followed by filtration of the calcium hydroxide suspension to remove all residual contaminants and/or non-reactive quicklime. The filtered suspension is then fed into a stainless steel reactor fitted with a mixer. Temperature is kept in the range of 10-70°C, after which the suspension is fed into a carbonisation reactor, where a carbon dioxide-containing gas is bubbled through the suspension. The carbonisation step is carried out at carbonisation gas flow rate of less than 30 litres per minute per kilogram of calcium hydroxide during precipitation under normal conditions. The suspension is removed from the tank when conductivity reaches the minimum level and pH drops below 8, wherein large particles are removed through a filter. The obtained calcium carbonate can be used as a pigment. |
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Non-aqueous ink composition for jet printing / 2485151 Invention relates to jet printing inks, particularly non-aqueous inks for jet printing. The ink for jet printing contains a pigment, binder, polyetheramide resin as a pigment dispersant, an organic solvent and an anti-corrosion agent from an imidazole group or a group of volatile anti-corrosion agents, preferably dicyclohexylamine or cyclohexylammonium cyclohexylcarbamate. |
 Method and device for laser marking / 2481932Invention relates to method and device for laser making of separate objects (versions) and may be used for making the eggs in sorting them and packing. There exists a definite tine interval during which marking can be applied on every egg as eggs are transferred in, at least, one path at preset speed. Proposed device comprises, at least, one first and second lasers located nearby one or several egg transfer paths to direct laser beam to eggs for making as said eggs pass through marking station. Said first and second lasers mark eggs next but one on their feed through marking station. |
FIELD: metallurgy.
SUBSTANCE: composition for marking of metal products produced by powder metallurgy method includes not more than 50% of wt % of luminophor and 50 wt % and more of binding-lubricating agent being fatty acid derivatives or powders of synthetic wax and/or paraffin. Marking of metal products by this composition consists in mixing of alloy metal powder with marking composition, which consists of at least one inorganic agent with property to provide luminescence at irradiation and binding-lubricating agent with subsequent pressing of obtained mixture and its sintering at temperature not exceeding 900°C.
EFFECT: possibility of products marking during their production by powder metallurgy method, simplifying marking technology and providing safety.
15 cl, 1 dwg, 8 ex
The invention relates to chemistry, in particular to inorganic , in particular to a composition based on compounds of barium, strontium, magnesium, beryllium, yttrium, activated tin, titanium, manganese, europium, , , erbium oxides, , borates, yttrium, gadolinium, activated cerium, europium, , , , and erbium with binder - stearic acid, zinc or aluminum, or a mixture of fatty acids derivatives with polyatomic phenols or a mixture of powders synthetic wax and/or paraffin with the addition of polyatomic phenols.
Such a composition is suitable for protection of valuable material objects from fraud and embezzlement by entering hidden identifying tag. Also the invention relates to the marking, identifiable when conducting a special procedure manifestations, for object detection or establishment data.
The group of inventions includes a composition for metal marking, method of marking and piece of metal (hereinafter the product). In particular, the proposed marking may be applied in the whole volume of products or parts of products for the identification of coins, tokens, medals or components, devices, machines, mechanisms and spare parts for them, for example, a variety of vehicles, household appliances manufactured by technologies powder metallurgy sintering temperature in inert gas is not more than 900°N
The most known methods of marking of metals are methods of processing of finished products when applying the identification information on the surface of the product by a method of pressing (stamping), electrochemical or laser exposure. These methods involve the use of special equipment for marking, difficult, because they require a certain precision of execution.
There is a method of marking of metal products markers on metal, including in its membership the fluorescent components. However, this kind of marking also involves marking is only on the surface of the product and is labor intensive, as the marking to each product is carried out manually.
Known method of marking the products manufactured by the method of layer-by-layer production, in which a three-dimensional object is produced using selective laser sintering or melting (WO 2010/057649, publ. 27.05.2010). The method involves mixing is used as a structural material metal powder, with at least one salt one of the rare-earth metal, having the property to show luminescence when irradiated by photons of the same wavelength outside the visible spectrum and the subsequent use of the energy source with concentrated energy processing for sintering or melting structural powder material.
To avoid excessive changes in the characteristics of the original powder, share marking of the component in the mixture does not exceed the 20 per cent by weight, preferably between 0.1 and 10 weight percent.
The resulting homogeneous product does not show the presence of a marking at illumination and observation in visible range.
Detection marking is carried out under irradiation products in UV, visible and PC ranges and observation in visible and PC ranges. The marking component can have one or more specific wavelength of excitation or radiation in different spectral ranges.
Bulleted powder can be used as a construction material in layering technology for production of three-dimensional objects, for example, using selective laser sintering or melting, using selective sintering or electron beam melting or infrared radiation, but also a way to SD-press with the purpose of fixing of material when spraying is applied binder.
For their analysis and the identification tags sufficient to subject the product or its fragments ultraviolet or infrared irradiation and reproducible radiation, install the manufacturer, date of production or from what source material was obtained product.
The known method of marking has a number of strengths, however, when using this method, unlike the proposed applies source of energy with concentrated energy processing and small spot treatment that leads only to layer-by-layer sintering of powder material, the non-uniformity of mechanical properties of obtained after sintering material in the volume of products and change of geometrical parameters of the product, that does not allow to use this method for mass production of products by a method of powder metallurgy using energy source for surround sintering mass products.
Known for the introduction of the protective sign in the form of inorganic phosphor in the basis of the material, i.e. the inclusion in the composition of the material (EN 2388054, publ. 27.04.2010).
According to a well known technology phosphor can be mixed with paper pulp in paper production, or can be added to a polymer material during extrusion. In order to increase the sustainability of the protective sign of thermal effects and increase the level of protection proposed the use of inorganic luminescent substance embedded in a matrix, which is a crystalline lattice of inorganic compounds, which contain rare earth elements. Also as a matrix can be used suitable organic compounds, such as poly (methyl methacrylate), polyethylene, , polystyrene, polypropylene, etc
This technology provides a high degree of protection against forgery of documents, such as bills or cheques, valuable documents made of paper/or polymers, maps, such as identification or credit labels for the protection of luxury items etc. The implementation of security labels in this technical solution for the identification of metal products subjected to heat treatment at a temperature of about 900ºc, cannot be referring to the application of the material used matrix with low ignition temperature.
Thus, in the prior art are not revealed solutions ensuring reliable marking of metal products during their manufacture way compaction with subsequent sintering at high temperatures taken in powder metallurgy.
Based on the foregoing, the present invention, the task of creating a way of marking of metal products manufactured by powder metallurgy, for selecting an object or establishment data.
Solution of this task is based composition inorganic phosphors for marking of metallic products obtained by method of powder metallurgy, including phosphor and -grease, which is used derivatives of fatty acids or powders synthetic wax and/or paraffin. The content of phosphor in the detection of the composition can be no more than 50 % by weight of the composition, as a binder in the amount of 50 wt.% and more.
As the marking of the component in the detection song contains inorganic phosphors on the basis of phosphates, and/or silicates barium, strontium, magnesium, beryllium, yttrium, activated tin, titanium, manganese, europium, , , erbium; oxides, , borates yttrium, gadolinium, activated cerium, europium, , , niobium, and erbium.
Data inorganic phosphors have thermal stability over 1000 OC and do not interact with powders of metals used to manufacture the products.
Examples of ranges of excitation and emission the classes are listed below:
stir in the UV range radiation the visible range of the spectrum of these properties has a phosphate Sa, activated Cs formula Sa 3 (PO 4 ) 2 :Cs.
stir in the UV range - radiation in the infrared range. These properties have neodymium-activated rare earth elements Nd 2 O 2 S:Cs ;
- initiation of radiation in the visible range of the spectrum of radiation in the PC range. These properties have neodymium oxide, activated rare earth elements Nd 2 O 2 :Cs;
stir in the IR beams of radiation in the infrared rays. These properties have inorganic phosphors with the formula: Y 2 O 2 S; La 2 O 2 S; LaGaO 3 ; Gd 2 O 2 S; Y 2 O 3 ; Gd 2 O 3 ; YbNa(WO 4 ) 2 ; LaGdO 3 ; as activators are used manganese, silver, copper, rare-earth elements.
As -lubricant substances are used surface-active agents (surfactants) on the basis of fatty acids, for example, powder stearic acid and its derivatives (stearaty zinc, aluminium), and powders synthetic wax and/or paraffin. This song is with even distribution of marking of the component in the form of powder metal.
For removal of oxide film from the surface of the metal powder with the aim of improving surround sintering to -coating substance additionally could be added polyatomic phenols . are strong reducing agents and are able to clean the surface of the metal powder from oxides.
As used , resorcinol, hydroquinone, pirrogalol, , .
Another solution to the problem is a way of marking metal products, which consists in mixing of metal alloy powder with the detection composition, consisting of at least one of inorganic substances (such as salt is one of the rare-earth metal), having the property to show luminescence under irradiation, and -lubricant substances, which are used derivatives of fatty acids or powders synthetic wax and/or paraffin. And then pressing the resulting mixture with subsequent sintering at temperatures not exceeding 900 OC With the use of an energy source for surround sintering mass products.
The method uses the above the marking composition.
The discovery of a hidden element of protection is carried out by means of the irradiation of a product or part of any radiation invisible to the naked eye spectral ranges and subsequent registration of the radiation of the phosphor. Especially it is preferable that the irradiation was carried out radiation in the infrared (IR), near (long-wave) infrared (NIR) or ultraviolet region (UV) spectrum.
Research scheme of the fragment of the product manufactured by using
the proposed method of marking is presented in Fig.1.
Fragment of a product obtained by sintering, is exposed to a source of ultraviolet radiation. Emitted by the fluorescent radiation fixed appliance (not shown) and/or visually.
Excitation used phosphors are radiation sources with the excitation frequency required for the excitation applied phosphor.
Application of the method of registration of excitation depends on the phosphor.
To avoid a change in the characteristics of the alloy and the violation of its modes of treatment the number of the substance of the detection compositions prepared for pressing of a mix should be less than or equal to 2 wt.% from the mass of metal powder.
During the implementation of the method of manufacture is provided possibility of marking of multilayer and manufactured by powder metallurgy by heat treatment with sintering temperature not more than 900 OC, which ensures their reliable identification over a long period.
The proposed method ensures the safety of identification characteristics regardless of the conditions of storage and use of products. Also the method involves analysis to establish the data about the object according to its fragment.
The object of a group of inventions is also a piece of metal received by a method of pressing, powder metallurgy technologies.
In the process of its manufacture to the metal powder to add pre-cooked composition consisting of at least one inorganic substances such as salt one of the rare-earth metal)that possesses the show luminescence under irradiation, and -lubricant substances, which used derivatives of fatty acids or powders synthetic wax and/or paraffin.
The product, according to the invention, obtained by using the above method of marking and detection of the composition.
The obtained product with a protective sign can be shaped into any form. As potential products can be brought coins, tokens, medals, etc.
Possible production of composite products, consisting of a substrate made of or obtained by powder metallurgy technologies, on top of which applied art made product at the declared technologies. The term «deposited» in this case involves direct material with a protective sign (art product) to the surface of the substrate and subsequent thermal treatment at the temperature not more than 900°N
The basics of the product (substrates) in the context of the present invention are usually parts of devices, machines, mechanisms and spare parts for them, for example, for devices such as vehicles, household appliances. Thus, the resulting product can work as a marker of other products.
It must be emphasized that the signs of dependent claims and embodiments of the invention, as set out in the description, can be used together or independently of each other and the object of independent claims independently.
As the information proving the implementation of inventions, provides the following examples.
Example 1
For marking of metallic products obtained by method of powder metallurgy, received the marking composition comprising 40 wt.% phosphor and 60 wt.%. -lubricant substances.
As a phosphor used inorganic phosphors that have thermal stability over 1000 OC and do not interact with powders of metals used for the manufacture of products, based on phosphate, barium, activated by manganese.
As -lubricant substances contains stearic acid.
Example 2. All as in example 1, but as a phosphor used inorganic compounds of yttrium oxide, activated cerium and inorganic compounds based on beryllium silicates, activated .
Example 3. All as in example 1, but as -lubricant substances was used the mixture of fatty acids derivatives with . As was used .
Example 4. All as in example 1, but as -lubricant substances was used the mixture of powders synthetic wax and paraffin with . As was used resorcinol.
Example 5. All as in example 1, but as -lubricant substances contains stearate aluminum or zinc in a mixture with or , respectively.
Example 6. All as in example 1, but as -lubricant substance containing powders synthetic wax or paraffin mixed with or , respectively.
Example 7
For marking of metal products - token has been prepared composition of strontium, activated tin, and stearic acid. The song was the with metallic powder alloy. mixture was pressed and subjected to sintering.
Example 8
When receiving combined product to the surface of the substrate made of by direct applied art product, the resulting mix of pre-cooked mixture of magnesium phosphate powder and synthetic wax and paraffin powder metal alloy. Then the combined product was subjected to thermal treatment at the temperature not more than 900°N
The proposed method of marking of metal products, received by a method of powder metallurgy using the stated composition of the detection provides reliable marking, well conserved in the for a long time, to allow identification of not only the whole products and their parts. The backlight technology is simple, does not require additional processing of finished products and is harmless, because without direct human intervention and its contact with harmful substances.
1. Composition based on inorganic phosphors for marking metal products, obtained by method of powder metallurgy, including the phosphor is characterized by the fact that contains -grease, which is used derivatives of fatty acids or powders synthetic wax and/or paraffin with the following component ratio, mass%:
phosphornot more than 50
-grease
50 and more.
2. Composition for marking of metal products according to claim 1, characterized in that, as a phosphor contains at least one inorganic compound that thermal stability over 1000 OC and don't interact with powders of metals used to manufacture the products.
3. Composition according to claim 1, characterized in that, as a phosphor contains inorganic compounds based on phosphate, and/or silicates barium, strontium, magnesium, beryllium, yttrium, activated tin, titanium, manganese, europium, , , erbium; oxides, , borates, yttrium, gadolinium, activated cerium, europium, , , , and erbium.
4. Composition according to claim 1, characterized in that, as -lubricant substances contains stearic acid and its derivatives, for example stearaty zinc or aluminum.
5. Composition according to claim 1, characterized in that -grease is a mixture of fatty acids derivatives with polyatomic phenols.
6. Composition according to claim 1, characterized in that -grease is a mixture of powders synthetic wax and/or paraffin with the addition of polyatomic phenols.
7. The composition according to claim 5 or 6, notable as a polyatomic contains phenols .
8. The composition according to claim 7, wherein as used , resorcinol, hydroquinone, pirrogalol, , .
9. Composition for marking of metal products according to claim 1, wherein the phosphor consists of connections, emitting a single wavelength, or includes different connections, which are characterized by different wavelengths or wavelength range.
10. A method of marking of metal products consisting in a mixing metal alloy powder with the detection composition, characterized in that the alloy powder mixed with pre-cooked marking composition, consisting of at least one of inorganic substances, possesses the show luminescence under irradiation, and -lubricant substances, which used derivatives of fatty acids or powders synthetic wax and/or paraffin, with subsequent pressing of the mixture and sintering at temperatures not exceeding 900°N
11. Piece of metal received by a method of pressing on technology of powder metallurgy, characterized in that in the process of its manufacture to the metal powder to add pre-cooked composition of claim 1-9.
12. The product according to claim 11, wherein the obtained using the method of marking to 10.
13. The product according to claim 11, wherein performed combined and consists of a substrate made of or obtained by powder metallurgy technologies, on top of which is coated with an artistic product, received in the way to 10.
14. The product according to item 13, wherein the artistic product inflicted direct to the surface of the substrate and subsequent thermal treatment at the temperature not more than 900°N
15. The product according to item 13, wherein the substrate can be component parts of devices, machines or mechanisms or spare parts for them (different vehicles, home appliances and etc).