# US 2013/0280480 A1 · Anti-wear coating > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0280480 A1 - Document ID: US20130280480A1 - Status: Published application - Kind: A1 - Application number: 13/880,904 - Filed: 2011-10-25 - Published: 2013-10-24 - Earliest claimed: 2010-10-25 - Assignees: MTU Aero Engines AG - Inventors: Thomas Uihlein; Wolfgang Eichmann; Falko Heutling; Annegret Brendel - Web page: https://patentgrep.com/patent/US20130280480A1 ## CPC - B32B 7/022: Mechanical properties - C23C 28/042: {including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides} - C23C 28/044: {coatings specially adapted for cutting tools or wear applications} - C23C 28/40: {Coatings including alternating layers following a pattern, a periodic or defined repetition} - F01D 5/288: {Protective coatings for blades} - B32B 2250/42: Alternating layers, e.g. ABAB(C), AABBAABB(C) - C04B 2237/04: Ceramic interlayers - C04B 2237/086: Carbon interlayers - C04B 2237/363: Carbon - C04B 2237/597: whereby the interlayer is continuous but porous, e.g. containing hollow or porous particles, macro- or micropores or cracks - F05D 2230/313: by physical vapour deposition - F05D 2300/611: Coating - Y10T 428/24149: Honeycomb-like - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to an anti-wear coating, specifically for components which are subject to erosion under mechanical loading, in particular for gas turbine components, said coating comprising at least two different individual layers which preferably alternate with one another multiply and are applied to a surface of a component which is to be coated. The individual layers comprise a ceramic main layer (45, 46, 47, 48) and a quasi-ductile, non-metallic intermediate layer (41, 42, 43, 44). ## Claims ### Claim at position 1 -9. (canceled) ### Claim 10 An anti-wear coating, wherein the coating comprises two different individual layers which have been applied to a surface to be coated of a component, the two individual layers comprising a ceramic main layer A and a pseudoductile, non-metallic intermediate layer B. ### Claim 11 (depends on 10) The coating of claim 10, wherein the two different individual layers A and B have been applied to the surface to be coated in a multiply alternating manner. ### Claim 12 (depends on 10) The coating of claim 10, wherein layer B comprises a material having preferential sliding planes which are arranged parallel to the surface of the component. ### Claim 13 (depends on 12) The coating of claim 12, wherein the material having preferential sliding planes has a sheet structure or a hexagonal lattice structure. ### Claim 14 (depends on 13) The coating of claim 13, wherein the preferential sliding planes are sheet planes or basal planes. ### Claim 15 (depends on 13) The coating of claim 13, wherein the material having a sheet structure or a hexagonal lattice structure comprises at least one of arsenic and antimony. ### Claim 16 (depends on 13) The coating of claim 13, wherein the material having a sheet structure or a hexagonal lattice structure comprises at least one of graphite, molybdenum disulfide, and hexagonal boron nitride. ### Claim 17 (depends on 10) The coating of claim 10, wherein layer B is a multilayer system which comprises layers having relatively weak bonding and ceramic layers. ### Claim 18 (depends on 17) The coating of claim 17, wherein layers having relatively weak bonding in the multilayer system have weak interfaces to ceramic layers in the multilayer system. ### Claim 19 (depends on 17) The coating of claim 17, wherein layers having relatively weak bonding in the multilayer system undergo no or only minor chemical reactions with ceramic layers in the multilayer system. ### Claim 20 (depends on 17) The coating of claim 17, wherein layers having relatively weak bonding and ceramic layers in the multilayer system have a low surface roughness. ### Claim 21 (depends on 10) The coating of claim 10, wherein layer B comprises at least one of a hard material compound and a ceramic material having deliberately introduced pores. ### Claim 22 (depends on 10) The coating of claim 10, wherein layer B comprises at least one of a hard material compound and a ceramic material having deliberately introduced microcracks which run essentially parallel to the surface of the component. ### Claim 23 (depends on 10) The coating of claim 10, wherein layer B comprises at least one of a hard material compound and a ceramic material having a deliberately introduced foreign phase. ### Claim 24 (depends on 15) The coating of claim 15, wherein layer B comprises at least one of C/TiC, C/SiC, C/ZrC, hexagonal BN/cubic BN, and hexagonal BN/SiC. ### Claim 25 (depends on 10) A component which is subject to erosion under mechanical stress, wherein the component comprises the anti-wear coating of claim 10. ### Claim 26 (depends on 25) The component of claim 25, wherein the component is a gas turbine component. ### Claim 27 (depends on 17) A gas turbine component, wherein the component comprises the anti-wear coating of claim 17. ### Claim 28 (depends on 10) A method of slowing or stopping microcrack formation in a component which is subject to erosion under mechanical stress, wherein the method comprises applying to a surface of the component the anti-wear coating of claim 10. ### Claim 29 (depends on 28) The method of claim 28, wherein the component is a gas turbine component.