Coating to improve oxidation and corrosion resistance of abrasive tip system
AssigneeRatheon Technologies Corporation
InventorsKevin Seymour, Christopher W. Strock, Thomas D. Kasprow
Life of this patent
Estimating the term…
Abstract
An abrasive coating for a substrate of a component in a gas path exposed to a maximum temperature of 500 degree Fahrenheit, comprising: a plurality of grit particles adapted to be placed on a top surface of the substrate; a matrix material bonded to the top surface; the matrix material partially surrounds the grit particles, wherein the grit particles extend above the matrix material relative to the top surface; and a film of oxidant resistant coating applied over the plurality of grit particles and the matrix material.
Claims16
An abrasive coating for a substrate of a component in a gas path exposed to a maximum temperature of 500 degrees Fahrenheit, comprising:
- a plurality of grit particles adapted to be placed on a top surface of said substrate;
- a matrix material bonded to said top surface;
- said matrix material partially surrounds said grit particles, wherein said grit particles extend above said matrix material relative to said top surface;
- and
- a film of oxidant resistant coating applied over said plurality of grit particles and said matrix material, wherein said film of oxidant resistant coating consists of a mixture of aluminum and zirconium oxide, and zirconium toughened aluminum oxide.
A turbine engine component configured for a gas path of at most 500 degrees Fahrenheit comprising:
- an airfoil having a tip;
- a composite abrasive coating bonded to said tip;
- said composite abrasive coating comprising an adhesion layer bonded to said tip;
- a layer of grit particles bonded to said adhesion layer;
- a matrix material coupled to said adhesion layer and connected to said grit particles;
- and
- a film of oxidant resistant coating applied over said plurality of grit particles and said matrix material, wherein said film of oxidant resistant coating consists of a mixture of aluminum and zirconium oxide, and zirconium toughened aluminum oxide.
A process for coating a turbine engine airfoil with an abrasive, said process comprising:
- applying an adhesion layer onto a tip of said airfoil, wherein said airfoil is configured to operate in a gas path having a maximum temperature of 500 degrees Fahrenheit;
- adhering a plurality of grit particles to said adhesion layer, wherein spaces are formed between said grit particles;
- applying a matrix material to said adhesion layer and connecting to said grit particles;
- applying a film of oxidant resistant coating over said plurality of grit particles and said matrix material, wherein said film of oxidant resistant coating consists of a mixture of aluminum and zirconium oxide, and zirconium toughened aluminum oxide.
Dependencies are inferred from the claim text.