Abradable seal and method of producing a seal
AssigneeUnited Technologies Corporation
InventorsCharles R. Beaudoin, Christopher W. Strock
Life of this patent
Estimating the term…
Abstract
An air seal for use in a gas turbine engine. The seal includes a thermally sprayed abradable seal layer. The abradable material is composed of aluminum powder forming a metal matrix, and co-deposited methyl methacrylate particles and/or hexagonal boron nitride particles embedded as filler in the metal matrix.
Claims20
An air seal comprising a porous abradable seal layer formed by thermally spraying a powder consisting essentially of aluminum powder which forms a metal matrix, co-depositing methyl methacrylate filler particles in the metal matrix, and removing the methyl methacrylate filler particles.
An air seal comprising a porous abradable seal layer formed by thermally spraying a powder consisting essentially of aluminum powder which forms a metal matrix, co-depositing hexagonal boron nitride filler particles and methyl methacrylate filler particles in the metal matrix, and removing the methyl methacrylate filler particles.
Dependencies are inferred from the claim text.