Method of carbonaceous material receiving, consisting metal
SUBSTANCE: invention relates to nanotechnology and nanostructures, particularly carbon-base materials and can be used in different field of engineering and energetics. In vacuum on substrate made of dielectric material it is sediment evaporated in vacuum silver by means of plasma carbon-base material. Silver sedimentation is implemented before the sedimentation of carbon-base material. Evaporation of carbon-base material, in the capacity of which it is used graphite, is implemented by pulsed arc discharge. Plasma for sedimentation of carbon-base material is created outside the discharge gap area of voltaic arc in the form of compensated currentless for-coagulates of carbonaceous plasma with density 5-1012-1·1013 cm-3, duration 200-600 mcs, recurrence rate 1-5 Hz. During the sedimentation process of carbon-base material it is implemented stimulating effect of carbonaceous plasma by inert gas in the form of ion flow with energy 150-2000 eV, which is directed perpendicularly to carbonaceous plasma stream. Then substrate with sediment on it silver and carbon-base material is extracted from vacuum chamber and annealed on air at temperature 400°C during 10 minutes.
EFFECT: it is manufactured carbon-base material, containing metal, with new properties, for instance electrical conductance and transparency.
The invention relates to nanotechnology and nanostructures, particularly carbon nanomaterials, and can be used to obtain materials for machinery, and energy. In particular, for the production of parts, which have, for example, conductive or transparency properties. Such materials can be used in the manufacture of electrodes, protective coatings, etc.
One of the common ways of obtaining carbon and metal nanomaterials is a method of laser ablation of carbon or metal target (Kozlov GI // technical physics Letters, 2003, vol. 29, VIP, p.88-94). The material is exposed to laser radiation of high power, resulting in the evaporation of atoms and clusters from the surface and their subsequent condensation in the nanoparticles.
A method of obtaining carbon and metallic materials in the process of dissociation of the source of the carbon and metal-containing molecules using electric arc discharge with subsequent cooling of the products of dissociation and their condensation (Zeng H, Zhu L, Hao G.M, Sheng RS // Carbon 1998, 36 (3), 259-61). The disadvantage of these methods of nanomaterials is the uncertainty of the concentrations and composition of ablation products, which leads to uncertainty in the properties of the material obtained.
There is a method of extracting the Oia nanomaterial in the combustion of hydrocarbons in flames (P.Minutolo, G.Gambi and A.D'Alessio // Twenty-Seventh Symposium (International) on Combustion, The Combustion Institute, 1998, pp.1461-1469). Adding various additives and varying characteristics of the flame, you can get a wide range of nanomaterials. However, for this method it is possible to note the disadvantages of the aforementioned methods. Besides, the presence of oxygen in the combustion process leads to partial oxidation of the carbon and especially metals.
A known method of manufacturing a carbon nanomaterial containing metal, in the form of a film having in its composition as the main elements carbon, silicon, metal, oxygen and hydrogen. The method consists in the fact that in the vacuum chamber place the holder with the substrate of dielectric material, is served on the holder substrate voltage of 0.3-5.0 kV with a frequency in the range from 1 to 25 MHz and keep the temperature of the substrate ranging from 200 to 500°C., in a vacuum chamber to create a gas discharge plasma, which uses argon, with an energy density of more than 5 kW·hour/gram-atom of carbon particles in the generated gas discharge plasma is vaporized carbonaceous material, which is used as organosiloxane heated to a temperature of 500-800°C, the decomposition in the plasma serves as a source of carbon, silicon, oxygen, and hydrogen, and then in a vacuum chamber with a gas discharge plasma is injected beam particles of the alloying Mat is the Rial, for example of metal, in the form of atoms or ions, carry out the deposition on the substrate atoms or ions of carbon, silicon, oxygen, and hydrogen, as well as atoms or metal ions and obtain a conductive carbon nanocomposite film (see patent RU 2118206, 1998).
The closest technical solution is a method of manufacturing a carbon - and metal-containing nanomaterial in the form of a film having in its composition as the main elements carbon, silicon, metal, oxygen, hydrogen and located on the dielectric substrate (see, for example, U.S. patent 5352493, 1994). The method involves deposition in vacuum on a substrate of dielectric material evaporated in vacuum and silver using plasma evaporated in vacuum carbon material.
The obtained film is an amorphous isotropic structure, which includes three network. The main matrix of the chain is a diamond-like carbon film. However, the films obtained have a high electrical resistance, higher values mentioned in the description to the specified patent, possibly due to the barrier resistance at interfaces between clusters. In the film structure manufactured by the above method, there are nanoclusters size (30-500) As determined by studies in tunneling microscope. Obviously, because of the emerging when this is istoty film in high temperatures in the presence of atmospheric oxygen is increased diffusion of oxygen into the film, followed by the burning of carbon at high temperatures.
The method aims to obtain films with uniform composition. The choice of the alloying material is dictated by the set by the qualities of the film that you want to retrieve.
However, the properties obtained in this way material containing the composition of the metal, mainly due to the properties of this metal in combination with a carbon material, such as electrical conductivity.
The task of the claimed invention is to provide a method of manufacturing a carbon nanomaterial containing metal, in the form of a film having new properties that extend the range of industrial applications such material.
The technical result of the claimed invention to provide a new property of the carbon material containing the metal.
This result is achieved by the fact that when the production of carbon nanomaterial containing metal, including deposition in vacuum on a substrate of dielectric material evaporated in vacuum and silver using plasma evaporated in vacuum carbon material according to the invention the deposition of silver is carried out before the deposition of the carbon material, the evaporation of the carbon material, which is used as graphite, perform pulsed arc discharge plasma for about what adenia carbon material create outside the scope of the bit period of the arc discharge in the form of compensated current-free forshadow carbon plasma density of 5·10 12-1·1013cm-3duration between 200 and 600 μs, a repetition rate of 1-5 Hz, while in the process of deposition of the carbon material are stimulation carbon plasma with an inert gas in the form of a stream of ions with energy of 150-2000 eV, which is directed perpendicular to the stream of carbon plasma, after which the substrate with the deposited it with silver and carbon material is removed from the vacuum chamber and annealed in air at 400°C for 10 minutes.
The method is as follows. On a substrate made of material (for example, mica brand COULD GOST 13752-86, Quartz, K-8, Sitall brand CT-50-1, polikor brand VK-100), which is not destroyed, does not decompose and does not emit gaseous products when heated in air to 500°C. is applied in the vacuum thermal evaporation film of silver, for example, brands SR,9 or SR. On top of this film synthesized ion-plasma method, a carbon film. This process, figure 1, is carried out in a vacuum chamber 1, in the case where the lateral flange axes are mutually perpendicular, inside one of them posted in the form of cylinder cathode of main discharge 5 and the anode of the auxiliary discharge 4 covering a gap cathode of main discharge 5, and the inner surface of the anode auxiliary discharge 4 is made with a tapered cut, drawn from one of the tor the extract cathode of main discharge 5 in the direction of the main discharge anode 3, made in the form of two rings rigidly connected by metal rods, with equal increments around the circumference, while the control electrode 6, the dielectric insert 8, the cathode of the auxiliary discharge 7 is made in the form of a disk, rigidly connected and installed between the main anodes 3 and 4 auxiliary discharge inside the vacuum chamber 1 is installed with the possibility of planetary rotation around the vertical axis and electrically coupled to the housing of the vacuum chamber 1 polictial 2. The substrate is isolated from podarkticules. Condensation of carbon is produced from the no-current carbon plasma supplied to the substrate in vacuum at a pressure of 1·10-1-1·10-2PA. Between the cathode of the main discharge 5 and the main discharge anode 3 under capacity 200 through an auxiliary discharge between the cathode of the auxiliary discharge 7, which is located at a distance L from the cathode of the main discharge 5, and the anode of the auxiliary discharge 4 covering the cathode of the main discharge 5, ignited arc discharge. The auxiliary discharge is ignited by a control electrode 6 made in the form of a ring located between the anode 4 and cathode 5 of the auxiliary discharge. Forming a film of carbon is achieved by the fact that at the time of formation of the plasma forsgate is isarene the graphite cathode of main discharge 5 in the pulse heating of the surface of the graphite to a temperature of 3000°C. Evaporation of carbon occurs in the form of chains Cn (where n 1, 2, 3, 5, 7). The resulting chain is coming to the surface of the substrate, where they polycondensation, i.e. the formation of longer due to their Association chains. Electronic temperature of the plasma must not exceed the energy of breaking bonds in the carbon chain, as it leads to the "merging" of these chains and the formation of amorphous carbon with a short-range order of the diamond or graphite type.
In the electric circuit of the main discharge is in series connected capacitor 11 and inductor 12, limiting the slew rate pulse discharge current. The capacitor 11 is charged by the power source 10 connected in parallel to the respective capacitor plates 11, to a voltage of 200 C. the main discharge Anode 3 has a very extensive internal surface, for which he may be made in the form of a "squirrel" wheels, that is, in the form of two rings rigidly connected by metal rods that are installed with equal pitch in the circumferential direction. The main discharge anode 3, the anode of the auxiliary discharge 4, the cathode of the main discharge 5, control electrode 6, the cathode of the auxiliary discharge 7, the dielectric insert 8 is installed coaxially.
The substrate on which is formed condensate is seanodes space R which is 20 - 30 cm from the main discharge) and may be made of any material, in particular ceramic, metal, polymer, silicone rubber, alloy, etc. may be of any shape and geometry. The coating is applied with high adhesion, uniformly on any form of surface depressions, the projections smaller than the Debye radius equal to 10 μm. The substrate is mounted on poblagodarite that during the coating process performs a planetary motion, that is, simultaneously rotates around its axis and the vertical axis of the vacuum chamber. During the entire cycle of formation of a film of carbon substrate with increasing the film is irradiated with ions of inert gas, for example argon. Inert gas ions formed in the ion source of radiation 9, located at the other lateral flange of the vacuum chamber 1 is communicated with the vacuum chamber an annular opening for passage of the ion beam. The source of ion irradiation can be a two-electrode system consisting of a cylindrical cathode with an annular gap for the passage of the ion beam and the annular anode. The energy of the ion beam of an inert gas, irradiating the film perpendicular to the flow compensated current-free plasma forshadow varies in the range of 150-2000 eV. Formed in the region of the discharge gap of the arc discharge compensated during PLA is Menno forgucci have a density of 5·10 12-1·1013cm-3the duration between 200 and 600 μs, a repetition rate of 1-5 Hz.
These parameters can be provided by specially selected geometry of the ignition electrodes, the electrical circuit of the plasma generator, comprising a storage capacitor, limiting inductance, a three-stage schema of the ignition. The result is a film consisting of a layer of silver and a layer representing a linear carbon chain.
The sample obtained was placed in a muffle furnace, for example, PM-8, and annealed in air at 400°C for 10 minutes (for silver). As the distance between the carbon chains in the hexagonal structure of the film is 5Å. (see figure 2), in film of linear-chain carbon intercalary silver atoms whose radius is less than 2Å.
Figure 2 presents the structure of the sample prepared by annealing.
The structure of the surface before the heat treatment was investigated on the microscope Femtoscan in atomic force mode, shown in figure 3.
Figure 4 shows the transmission spectra systems LTD - silver (when the film thickness of the silver 600Å) before heat treatment on - line in the form of a square characters, after heat treatment is in the form of a round character. From this figure it follows that after the heat treatment system became more transparent.
The volt-ampere characteristic obtained by the microscope is Femtoscan tunnel mode before annealing, presented in figure 5. It shows metallic character of conductivity.
After annealing in a muffle furnace PM-8 in air at 400°C for 10 minutes received the following changes:
1. Change the appearance of a - 6. There is a lamp mounted behind a film.
2. The surface topography - 7. Compared with figure 3 topography has changed towards integration cluster.
3. The volt-ampere characteristic of the resulting nanomaterial - Fig.
This current-voltage characteristic shows that the tunneling transition corresponds to a transition metal - semiconductor. Metal is the needle microscope, semiconductor - surface of the heat-treated film silver - pointers. With needles in the surface takes more electrons than with the film surface on the needle. The resulting material belongs to the class of p-semiconductors.
It is obvious that the claimed method received a new substance composed of atoms of silver and polymer molecules of carbon. In the world practice it is known that the use of silver in contact with the carbon materials even at temperatures of 1100°C does not give such a result. The proof of this is the known phase diagram of the system silver - graphite, which is shown in Fig.9.
The thickness of the deposited films plays an important role for the degree transparently the ti film.
Figure 10 presents electronography of the heat-treated film Ag++, where in the center of the visible 6 reflexes, characterize, as it is known (see, for example, Amelda. Conjugated polymers. Moscow, Nauka, 1989), the hexagonal structure of linear-chain carbon. On the periphery of the visible reflexes silver rings.
The resulting electronography figure 10 suggests that the hexagonal structure pointers are not destroyed when annealing with silver. This is evidenced by the absorption spectrum obtained by using infrared Fourier-transform spectrometer. This spectrum is shown in 11.
Method for the production of carbon nanomaterial containing metal, including deposition in vacuum on a substrate of dielectric material evaporated in vacuum and silver using plasma evaporated in vacuum carbon material, characterized in that the deposition of silver is carried out before the deposition of the carbon material, the evaporation of the carbon material, which is used as graphite, perform pulsed arc discharge plasma for deposition of the carbon material create outside the scope of the bit period of the arc discharge in the form of compensated current-free forshadow carbon plasma density of 5·1012-1·1013cm-3duration between 200 and 600 μs, a repetition rate of 1-5 Hz, the ri in the process of deposition of the carbon material are stimulation carbon plasma with an inert gas in the form of a stream of ions with energy of 150-2000 eV, which is directed perpendicular to the stream of carbon plasma, after which the substrate with the deposited it with silver and carbon material is removed from the vacuum chamber and annealed in air at 400°C for 10 minutes
SUBSTANCE: invention relates to metallurgy of heat-resistant alloys and can be used for superficial modification of heat-resistant alloys for grain refinement on surface of foundry goods. Modifying agent contains, wt %: nickel oxide 4.0-10; cobaltous oxide 20-27; aluminium oxide - the rest.
EFFECT: invention provides increasing of modification efficiency.
2 tbl, 1 ex
SUBSTANCE: invention relates to metallurgy field, particularly to manufacturing of anisotropic electric steel with electric insulating coating. Composit contains following components, in ratio: MgO 100, MgSO4 0.10-0.40, MgCl2 0.04-0.10, SiO2 0.10-0.30.
EFFECT: receiving of composite for formation of even defect-free underlayer, allowing well adhesion ad high electrical resistance.
1 tbl, 2 ex
FIELD: engines and pumps.
SUBSTANCE: application: invention is related to the field of propulsion engineering, namely to technology for strengthening of piston grooves by method of spark strengthening, and may be used for strengthening of aluminium piston grooves in internal combustion engines. Method for strengthening of piston grooves in internal combustion engine is realised by means of thermal action at local zone of strengthened groove of piston by spark charge, which is formed at atmospheric pressure with frequency of pulses of 7 Hz and energy of spark charge of 0.1 mJ.
EFFECT: increased operational reliability of pistons.
1 ex, 2 tbl
SUBSTANCE: present invention pertains to military equipment and can be used when making high-precision small arms. A mandrel bar or puncheon is put into the channel of barrelled work-piece and a channel with grooves is formed through rotary forging or drawing. The surface of the work-piece channel is pre-activated and then coated with a composition. The composition assumes functions of lubricant material and provides for a wear-proof coating when making the channel with grooves. The composition contains a mixture of homogeneous and heterogeneous catalysts and dispersion reinforcement systems in viscous carrier and natural minerals in the class of carbonates, halogenides, sulphates, silicates and oxides with combined concentration of 20-40 wt %. The natural minerals are modified until formation of a porous layer of minerals on the surface of the channel, forming hydrophilous-hydrophobic splices, filled with organic ligands. The work-piece then undergoes thermal processing for 2-4 hours at 130-140°C, after which a channel with grooves and a wear-proof coating are simultaneously formed.
EFFECT: reduced labour input in manufacturing with improved tactic-technical and operational characteristics of the barrel at the same time.
2 cl, 5 dwg
SUBSTANCE: heat-resistant coating system consists essentially plastic basis from bonding agent and multitude essentially solid nano-dimensional ceramic particles, allocated in essentially plastic basis from bonding agent. Middle free space between multitude of essentially solid nano-dimensional ceramic particles has value, founded in the range of nano-dimentions. Bonding basis contains at least one component, chosen from superalloy, alloy for solid soldering, multiphase alloy, low-temperature alloy, heat-resistant alloy, intermetallic material, semiconducting metal, ceramic solids and alloy with shape memory. Multitude nano-dimensional ceramic particles contains at least one component, chosen from ceramic oxide, ceramic carbide, ceramic nitride, ceramic boride, metal silicide, ceramic oxycarbide, ceramic oxynitride and carbon.
EFFECT: nano-structural coating systems, providing achieving of increased erosion resistance, corrosion stability, resistance against destruction while blow by solid particles and cavitation resistance at rather low temperatures.
14 cl, 5 dwg
SUBSTANCE: invention can be used for protection of details made of steel, nickel and titanium alloys against saline and fretting corrosion and contact wear. Composition for receiving of coating on details made of structural steel or of heat-resistant alloy on the basis of nickel or titanium, contains following ratio of ingredient, wt %: aluminium-chromium-phosphate binding substance - 30-35, water - 12-18, chromic anhydride - 2-3, molybdenum disilicide - the rest. Molybdenum disilicide powder has fraction till 10 micrometer. In particular cases of invention implementation compound can additionally contains 0.3-0.5 wt % of surface-active material, for instance synthanol, "ОП"-7, "ОС"-20, "АФ"-10.
EFFECT: resistance against saline and fretting corrosion, against contact wear.
3 cl, 2 tbl, 1 ex
FIELD: machine building.
SUBSTANCE: invention deals with application of coatings (in particular - those of rubber materials) onto worn or newly-fabricated machinery parts and may be equally relevant for worn component parts repair and fabrication of new machinery products operating under lubricated sliding friction conditions. The proposed coating formation method envisages application of a metallopolymer material onto the component part worn-out surface followed by the surface shaping with the help of a stamping punch or a master form or by way of mechanical treatment. The above process is combined with metal grid being contact-welded onto the component part surface. After that a rubber compound is applied onto the component part surface that undergoes curing and surface shaping treatment.
EFFECT: improved abrasive and fatigue resistance of the coating.
SUBSTANCE: invention refers to method of applIication coating for inhibition of reactivity of super-alloy on nickel base. A material inhibiting reactivity is applied on the surface of super-alloy on Ni base prior to application of diffusive aluminium coating. The material inhibiting reactivity corresponds to pure Ru, alloy of Co-Ru, alloy of Cr-Ru or solid solution, the basic component of which is Ru, also formation of the secondary zones is retarded.
EFFECT: production of coating for inhibition of reactivity of super-alloy on nickel base at retarding formation of the secondary reaction zone.
7 cl, 19 dwg, 4 tbl
SUBSTANCE: present invention pertains to coating compositions for protecting steel and can be used in the machine building industry for protecting big work-pieces made from low-alloyed and low-carbon steel from high-temperature corrosion during process heating before hot treatment with pressure, particularly press forming. The coating composition contains, as refractory filler, quartz sand, clay mineral and kaolinised chamotte. The glass component is in form of datolite concentrate, sodium tripolyphosphate and aluminoborosilicate glass, with the following content of components, in wt %: quartz glass 18.0-20.0, Latnen clay LT - 0.30-4.0, datolite concentrate 14.0-16.0, sodium tripolyphosphate 0.5-1.0, kaolinised chamotte 38.0-40.0, aluminoborosilicate glass 23.0-25.0. All materials of the composition are ground up such that they can pass through a sieve with 10000 openings per cm2. The aluminoborosilicate glass has the following chemical content, wt %: SiO2 66.0 ± 0.5, Al2O3 12.0 ± 0.5, B2O3 8.0 ± 0.5, CaO 7.0 ± 0.5, Na2O 7.0 ± 0.5.
EFFECT: reduced loss of metal into slag during thermal treatment and reduced labour and energy inputs for manual or mechanical cleaning of surfaces of steel work-pieces after press forming.
FIELD: engines and pumps.
SUBSTANCE: invention is related to turbine blade with coating for deterrence of Ni-based superalloy reactivity. Specified coating is made by application of material for reactivity deterrence on Ni-based superalloy surface prior to application of diffusion aluminium coating. Material for reactivity deterrence represents pure Ru, alloy Co-Ru, alloy Cr-Ru or solid solution, the main component of which is Ru, at that creation of secondary reaction zones is deterred. Turbine blades are produced with higher resistance to Ni-based superalloy oxidation by deterrence of secondary reaction zones creation.
EFFECT: higher resistance to Ni-based superalloy oxidation.
7 cl, 4 tbl, 13 dwg, 2 ex
FIELD: technological processes.
SUBSTANCE: invention is related to methods of multilayer coating preparation for cutting tool and may be used in metal working. Vacuum-plasma application of double-layer coating is carried out. Lower layer is applied from nitride or carbonitiride of titanium, aluminium and iron compound, with their following ratio, weight % - titanium 83.7-85.2, aluminium 13.0-14.2, iron 1.8-2.1, and top layer is made of nitride or carbonitride of titanium, aluminium and chrome compound with their following ratio, weight % - titanium 74.1-76.8 , aluminium 13.0-14.5, chrome 10.2-11.4. Coating is applied with three cathodes installed horizontally in single plane. The first cathode is made as composite from titanium and iron, the second one - composite from titanium and chrome and is installed opposite to the first one, and the third one - composite of titanium and aluminium and is installed between them.
EFFECT: increase of cutting tool serviceability.
FIELD: metal working, in particular, deposition of multiple-layer coatings onto cutting tools.
SUBSTANCE: method involves providing deposition of lower layer of nitride or carbonitride of titanium, aluminum and iron compound, used in the ratio, wt%: titanium 83.7-85.2, aluminum 13.0-14.2, iron 1.8-2.1; providing deposition of upper layer of nitride or carbonitride of titanium, aluminum and zirconium compound, used in the ratio, wt%: titanium 64.8-68.0, aluminum 12.0-13.2, zirconium 20.0-22.0; depositing said layers using three cathodes arranged horizontally in single plane, with first cathode consisting of titanium and iron, and second cathode consisting of titanium and zirconium and being positioned opposite first cathode, and third cathode consisting of titanium and aluminum and being positioned therebetween.
EFFECT: increased efficiency of cutting tools provided with such coating.
FIELD: vacuum plasma treatment of articles with coats.
SUBSTANCE: proposed device has working chamber with anode which is communicated via at least one hole with chamber provided with cathode; device is also provided with DC source. Additional chamber with additional anode is connected with additional DC source and is communicated with working chamber via at least one hole. Anode is used as holder of articles and cathode is made in form of cathode of vacuum-arc discharge.
EFFECT: enhanced efficiency of chemico-thermal treatment of articles.
3 dwg, 2 ex
FIELD: chemical industry; metal-working industry; other industries; methods of deposition of the wear-resistant coatings on the cutting tool.
SUBSTANCE: the invention is pertaining to the methods of deposition of the wear-resistant coatings on the cutting tool and may be used in the metal-working. The technical result of the invention is the increased functionability of the cutting tool. The base layer is deposited out of nitride or carbonitride of the compound of titanium, silicon and aluminum at their ratio of (in mass %): - titanium 86.0-87.3, silicon - 0.7-1.0, aluminum - 12-13. The upper layer is deposited out of the nitride or carbonitride of the compound of titanium, silicon and molybdenum at their ratio of (in mass %): - titanium - 91.8 -92.3, silicon - 0.8-1.0, molybdenum - 6.9-7.2. Deposition of the coating layers is exercised by three cathodes located horizontally in one plane. The first cathode is made composite out of titanium and aluminum. The second cathode is made composite out of titanium and molybdenum and is placed counterly to the first one. The third cathode is manufactured out of titanium and silicon alloy and placed between them.
EFFECT: the invention ensures the increased functionability of the cutting tool.
FIELD: chemical industry; metal-working industry; other industries; method of deposition of the wear-resistant coatings on the cutting tool.
SUBSTANCE: the invention is pertaining to the methods of deposition of the wear-resistant coatings on the cutting tool and may be used in the metal-working. The technical result of the invention is the increased functionability of the cutting tool. The base layer is deposited out of nitride or carbonitride of the compound of titanium, silicon and aluminum at their ratio of (in mass %): - titanium 86.0-87.3, silicon - 0.7-1.0, aluminum - 12-13. The upper layer is deposited out of the nitride or carbonitride of the compound of titanium, silicon and chromium at their ratio of (in mass %): - titanium - 87.5-88.9, silicon - 0.7-1.0, chromium - 10.4-11.5. Deposition of the coating layers is exercised by three cathodes located horizontally in one plane. The first cathode is made composite out of titanium and aluminum. The second cathode is made composite out of titanium and chromium and is placed counterly to the first one. The third cathode is manufactured out of titanium and silicon alloy and placed between them.
EFFECT: the invention ensures the increased functionability of the cutting tool.
FIELD: vacuum electric arc devices for applying high-quality coatings, possibly in machine engineering, tool making, electronics, optics and other industry branches for modifying surfaces of materials.
SUBSTANCE: device includes plasma source with focusing electromagnetic winding 3 connected to plasma guide 4 embraced by deflection electromagnetic windings mounted with possibility of rotation around crossing them radius-vector of curvature of plasma duct clockwise and counter clockwise. Deflection electromagnetic winding embracing inlet opening of plasma guide 4 is made with possibility of rotation relative to lane of said opening by 10 - 40°. Diagonal deflection electromagnetic winding 6 is made with possibility of rotation relative to cross section of plasma guide in zone of embracing it by 5 - 30°. Additional deflection electromagnetic windings are mounted at both sides from diagonal deflection electromagnetic winding with possibility of rotation by intermediate angles in such a way that to provide gradual decrease of rotation angle of deflection electromagnetic winding from first one till outlet one. Usage of such device allows improve transmission factor of curvilinear plasma filter and increase ionic current at filter outlet by 1.5 - 1.7 times that is up to 4-5% of electric discharge current. It increases efficiency of coating deposition.
EFFECT: enhanced design of electric arc vacuum device, improved efficiency of coating deposition.
3 cl, 1 dwg, 2 ex
FIELD: ornamental finishing of articles.
SUBSTANCE: invention relates to applying thin-film coatings in vacuum. Method comprises attaching paper shield to article and placing the latter onto rotating table. Then follows ion purification of surface in vacuum (5.7-7.5)·10-2 Pa at voltage 3.5-4.0 kV and ion current 50-100 mA for 10-15 min. Next operation is atomization of titanium cathode via arc vaporization accompanied by ion-plasma precipitation onto articles mounted on rotating table having zero potential against cathode. Arc sputtering of titanium is conducted in vacuum 8.7·10-2 Pa for 90-120 sec at ion current 90-130 A by atomization of titanium cathode. After that, nitrogen is introduced into chamber to deposit titanium nitride for 90-120 sec at ion current 90-130 A and in vacuum 7.5·10-2-1.5·10-1 Pa, which is selected in dependence on desired color of decorative coating.
EFFECT: simplified technology, improved quality of coatings, extended application area of method, in particular for articles of polymer materials.
2 dwg, 1 tbl
FIELD: application of multi-layer coats on cutting tools; mechanical engineering and metal working.
SUBSTANCE: working surfaces of tools are covered with multi-layer vacuum plasma coat. Layers are made from carbonitride of refractory metal or compound of metals. Each subsequent layer is settled at higher content of acetylene in mixture of reaction gases as compared with previous layer.
EFFECT: increased serviceability of cutting tools due to different hardness of layers forming barrier to cracking.
2 cl, 2 ex
FIELD: application of multi-layer coats on cutting tools; mechanical engineering and metal working.
SUBSTANCE: proposed method consists in application of vacuum-plasma multi-layer coat on working surfaces of tools. For application of intermediate layer, use is made of carbonitride of titanium-zirconium and for application of upper and lower layers, use is made of titanium carbonitride at different content of carbon in layers. Intermediate layer protects the coat against cracking; upper and lower layers have low friction coefficient.
EFFECT: increased serviceability of cutting tools.
2 cl, 1 tbl, 2 ex
FIELD: production processes.
SUBSTANCE: invention refers to obtaining of wear-resisting ultra-hard coatings, namely, to forming of diamond-type coatings and can be used in metalworking, engineering industry, nanotechnologies, medicine and electronics. Preliminary there performed is product surface plasma stripping by accelerated ions in vacuum chamber at pressure of 10-3 - 10 Pa. Then adhesion layer is applied by plasma method. The thickness is 1-500 nm. The layer is made from metal that belongs to the group of aluminium, chrome, zirconium, titanium, germanium or silicone or their alloys. At the same time the product receives direct or pulse negative voltage of 1-1500 V. Then there applied is intermediate layer with thickness of 1-500 nm. It consists of carbon and metal mixture. Metal belongs to the group of aluminium, chrome, zirconium, titanium, germanium or silicone or their alloys. Intermediate layer is applied at ascending changing of carbon concentration in this mixture from 5 to 95 at.%. At the same time the product receives direct or pulse negative voltage of 1-1500 V. Then there applied is at least one layer of carbon diamond-type film by graphite cathode or laser spraying or by plasma destruction of carbon-bearing gases or carbon-bearing liquid vapours.
EFFECT: increase of adhesion, wear resistance and temperature stability of diamond-type coating.
11 cl, 1 dwg, 5 ex