RussianPatents.com
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Ceramic mixture for engobing. RU patent 2455269. |
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FIELD: chemistry. SUBSTANCE: invention relates to the technology of silicates and compositions of ceramic mixtures which can be used in engobing ceramic articles. The ceramic mixture for engobing contains the following in wt %: kaolin 43.5-51.3; clay 39.0-43.0; marble flour 0.6-1.2; potsherd 4.0-6.0; dolomite 0.1-0.2; nepheline 4.0-6.0; carboxymethyl cellulose 0.1-0.2; liquid potassium glass 0.3-0.5. EFFECT: lower burning temperature of the ceramic mixture.
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Method of producing non-metal casting / 2454385 Proposed method relates to production of non-metal components for construction structures, heat engineering assemblies and chemical hardware with aggressive working media. Non-metal materials are fused and melt is poured into mould. Produced cast is cooled by sprinkling with water to 670-950°C for solid particles of aluminium to be charged on cast surface. Aluminium on cast surface is fused by cast heat to create 1-9 mm-thick aluminium melt layer on cast surface. Then, said melt is blown by air at melt temperature of 10-600°C unless complete oxidation of aluminium and production of component. Air temperature is decreased at aluminium layer smaller thickness and increased at larger thickness. |
Refractory ceramic article / 2433105 Invention relates to refractory materials and engineering ceramics and can be used in production of refractory ceramic articles, including industrial containers used during synthesis of high-purity materials based on niobiuim and tantalum pentaoxides, as well as for refractory lining of chemical apparatus, furnaces and structural elements. The refractory ceramic article has a base made from several flat blocks of quartz ceramic with moderate porosity, between which there are seams filled with solder of niobium or tantalum pentaoxide, and an outer coating of niobiuim or tantalum pentaoxide applied on the base. The edges of the blocks of the base are rounded and the corners of the blocks are smoothed. The solder in the seams has a double-tee cross-section with concave sides of the support. The width of the seam is not greater than twice the thickness of the block. The spherical radius of the edges of the blocks is not greater than half the thickness of the block. |
High temperature coating / 2427559 Invention can be implemented as protection from oxidation of ceramic composite materials for parts of hot routs of perspective gas-turbine installations (GTI) and gas-turbine engines (GTE) of transport systems and power engineering operating under effect of oxidising mediums and fuel combustion products at temperature up to 1600°C. High temperature coating has the following chemical composition, wt %: silicon 10-14, boron 3-7, hafnium oxide 50-60, hafnium boride 12-19, boron carbide 8-14. |
Layer or coating and composition for applying said layer or coating / 2394798 Present invention relates to a composition for applying a layer of coating, particularly an anti-adhesion layer for casting moulds which are in contact with molten metals or glass. The composition contains aluminium titanate or silicon nitride with average particle size greater than 500 nm, an oxide inorganic component with average particle size between 100 nm and 10 mcm and a binding agent which contains particles with average size less than 50 nm. When preparing the composition, aluminium titanate or silicon nitride is dispersed in water and the obtained dispersion is mixed with aqueous dispersions of an inorganic oxide component, binding agent and additional components. The oxide component can be aluminium oxide or titanium oxide and the additional components can be boron nitride or graphite. The invention also relates to use of the composition to apply a layer or a coating on fire bricks, graphite or steel articles, to layers or coatings applied from this composition, to articles which are at least coated with the said layer or coating. |
Fire-resistant mixture and multicomponent material for protective coatings of heating elements based on lanthanum chromite made from said mixture / 2389709 Invention relates to heat-resistant nonmetallic materials and can be used to make effective protective coatings of heating elements based on lanthanum chromite working in an air atmosphere. The invention involves use of a heat-resistant mixture composed of lanthanum chromite, frits from oxide phases and aluminoborosilicate glass with the following ratio of ingredients, in wt %: lanthanum chromite 32-44, frit 43-48, aluminoborosilicate glass 13-20. The frit from oxide phases contains the following components, in wt %: yttrium oxide Y2O3 63-65, aluminium-magnesium spinel MgAl2O4 13-21, lanthanum aluminate LaAl11O18 6-13, mullite Al6Si2O13 6-13, aluminoborosilicate glass SiO2 53-55, CaO 18-20, Al2O3 13-15, B2O3 9-11, MgO 2-4. The multicomponent material for protective coatings obtained from the mixture contains crystalline phases and a glass phase in the following ratio, in wt %: LaCrO3 29-42, Y2O3 30-31, MgAl2O4 6-8, LaAl11O18 3-5, Al6Si2O13 3-5, aluminoborosilicate glass phase 16-22. |
Protective coat / 2383514 Protective coat contains liquid potassium glass and powdery fillers, at the following ratio of components in weight parts: liquid potassium glass - 100-150, silicon carbide - 100-200, graphite - 1-12, sodium fluorsilicate - 0-12. |
Method for manufacturing of composite material / 2379268 In manufacturing of a composite material, a carbon-base filling cloth is used as a material blank impregnated with a compound of liquid Bakelite 100 weight fractions, isopropyl alcohol 54-100 weight fractions, tetraethoxysilane 44-160 weight fractions and water 7-32 weight fractions. Thereafter drying, consolidation and thermal processing at temperature 1800-2000°C with formation of silicon carbide follow. |
Method of preparing super-hard coated abrasive / 2378231 Described is a method of preparing a super-hard coated abrasive, specifically a coated abrasive based on diamond or cubic born nitride (cBN). When realising this method, an inner layer of an element which is capable of (individually or combined with other elements) forming carbides, nitrides or borides is deposited onto the surface(s) of abrasive material at the first stage through a hot coating method. The hot coating method is selected from a group a group comprising a method of depositing from gaseous phase via thermal decomposition of metal halides, a method of chemical deposition from vapour phase and a thermal diffusion coating method. Vanadium, molybdenum, tantalum, indium, zirconium, niobium, tungsten, aluminium, boron and silicon are usually used for depositing the inner layer. Through reactive sputtering using a reactive gas, the inner layer is coated with at least one outer layer made from material selected from a group comprising metal carbides, metal nitrides, metal borides, metal oxides and carbonitrides, boronitrides and borocarbonitrides of metals, for example carbide or nitride of titanium, silicon or aluminium. |
Composition for manufacturing carbon silicon-carbide material / 2375333 Siliconising composition includes the following components, parts by weight: liquid bakelite BZh3 - 100, isopropyl alcohol - 67-100, tetraethoxysilane - 53-160, water - 11-32. |
Composition for thermal barrier, machine unit from superalloy with coating containing such composition, ceramic coating and method of coating obtaining / 2365565 Invention relates to composition of ceramic thermal barrier, used in machine units from superalloy. Composition contains base from zirconium oxide, at least one trivalent oxide from group containing erbium oxide, europium oxide, praseodymium oxide, terbium oxide, holmium oxide and their mixtures, allowing to stabilise zirconium oxide and optimally reduce zirconium oxide heat conductivity, and at least one pentavalent oxide from group: niobium oxide, tantalum oxide or their mixture, allowing to reduce number of oxygen vacancies in such way that it was in fact equal to number of oxygen vacancies in partially stabilised zirconium oxide. Said trivalent oxide is present in molar concentration created by the first part, allowing partial stabilisation of zirconium oxide, and by the second part, which introduces point defects into grid, said pentavalent oxide being present in molar concentration equal to molar concentration of said second part of trivalent oxide. |
Ceramic mixture / 2455259 Invention relates to the technology of silicates and compositions of ceramic mixtures which can be used in making articles for decorative and art purposes. The ceramic mixture contains kaolin, clay, marble flour, potsherd and marshalite, with the following ratio of components in wt %: kaolin 54.9-64.7; clay 20.0-25.0; marble flour 0.05-0.15; potsherd 0.05-0.15; marshalite 15.0-20.0. |
Ceramic mixture / 2455258 Invention relates to compositions of ceramic mixtures which can be used in making crockery: plates, saucers etc. The ceramic mixture contains kaolin, feldspar, potsherd, phosphogypsum, scrap sheet glass and liquid potassium glass, with the following ratio of components, wt %: kaolin - 75.6-76.6; feldspar - 14.0-16.0; potsherd - 1.0-2.0; phosphogypsum - 0.1-0.3; scrap sheet glass - 6.0-8.0; liquid potassium glass - 0.1-0.3. |
Ceramic mixture / 2455257 Invention relates to production of ceramic brick based on local low-melting clay material. The ceramic mixture for making bricks contains low-melting clay material and calcium-containing wastes formed during production of mineral fertiliser, with the following ratio of components, wt %: low-melting clay material 91-98; calcium-containing wastes from production of mineral fertiliser 2-9. |
Ceramic mixture / 2455256 Invention relates to compositions of ceramic mixtures which can be used in making crockery: plates, saucers etc. The ceramic mixture contains kaolin, feldspar, potsherd, phosphogypsum, talc and liquid potassium glass, with the following ratio of components, wt %: kaolin - 61.6-63.6; feldspar - 10.0-12.0; potsherd - 14.0-16.0; phosphogypsum - 0.1-0.3; talc - 10.0-12.0; liquid potassium glass - 0.1-0.3. |
Ceramic mixture / 2455255 Invention relates to compositions of ceramic mixtures which can be used in making household ceramic articles. The ceramic mixture contains kaolin, feldspar, potsherd and phosphogypsum, with the following ratio of components, wt %: kaolin - 45.0-49.0; feldspar - 48.0-52.0; potsherd - 1.0-2.0; phosphogypsum - 1.0-2.0. |
Crude mixture for making construction articles / 2454383 Invention relates to industry of construction materials, and specifically to compositions for crude mixtures for making bricks and blocks. The crude mixture for making construction articles contains clay, waste paper, sawdust, crushed fibreglass and scrap sheet glass ground to specific surface area 3500-4500 cm2/g, wherein components are in the following ratio, wt %: clay 87.75-88.75; waste paper 0.1-0.15; sawdust 0.1-0.15; crushed fibreglass 3.0-5.0; ground scrap sheet glass 6-0-9.0. |
Ceramic mass for brick production / 2452713 Ceramic mass for brick production contains clay, ground brick rejects after drying, ground wastes of glass fibre and crushed glass, at the following ratio of components, wt %: clay - 69.8-73.0; ground brick rejects after drying - 0.1-1.0; ground wastes of glass fibre - 0.1-1.0; crushed glass - 25.0-30.0. |
Ceramic mass / 2452712 Ceramic mass contains kaolin, feldspar, ceramic breakage and phosphogypsum, at the following ratio of components, wt %: kaolin - 46.0-48.0; feldspar - 32.0-38.0; ceramic breakage 15.0-20.0; phosphogypsum -0.5-1.0. |
Ceramic mixture for facing tile fabrication / 2452711 Ceramic mixture for facing tile fabrication contains clay, kaolin, quartz sand, broken tiles, sodium tripolyphosphate and marshallite, at the following ratio of components, wt %: clay - 39.8-44.8; kaolin - 20.0-25.0; quartz sand 15.0-20.0; broken tiles - 0.1-1.0; sodium tripolyphosphate -0.1-0.15; marshallite - 15.0-20.0. |
Ceramic mixture for facing tile fabrication / 2452710 Ceramic mass for making facing tiles contains the following components, wt %: kaolin 58.0-59.0; feldspar - 29.0-33.0; ceramic breakage 0.1-1.0; phosphogypsum - 0.5-1.0; clay 7.0-11.0. |
Ceramic mass for majolica article production / 2278088 Claimed mass contains (mass %): waste from recovery of cobalt concentrate 20-30; tile 5-10; clay 60-70. Reject materials from recovery of cobalt concentrate has bulk mass of 900 kg/m3, density of 2700 kg/m3, and refractoriness of 1180°C. |
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