Multiple layer erosion resistant coating and a method for its production
AssigneesROLLS-ROYCE plc, Turbomeca Societe Dite, Etat Francais-Delegation Generale Pour L'Armement
InventorsDavid S. Rickerby, Pierre Monge-Cadet, Guy Farges
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Abstract
A multiple layer erosion resistant coating on a substrate comprises alternate layers of tungsten and titanium diboride. All of the layers have the same thickness and preferably have thickness's of between 0.3 and 1 micrometer to give improved erosion resistance. The layers are produced by sputtering.
Claims11
A multiple layer erosion resistant coating on a surface of a substrate, said coating comprising layers of titanium diboride alternating with layers of metallic material, said coating having at least two layers of titanium diboride and at least two layers of metallic material, the metallic material having a relatively high elastic modulus, said metallic material being selected from the group consisting of tungsten, an alloy of tungsten, nickel and an alloy of nickel.
A multiple layer erosion resistant coating on a surface of a substrate,
- said coating comprising layers of titanium deboride alternating with layers of metallic material, said coating having at least two layers of titanium diboride and at least two layers of metallic material, the ratio of thickness of the titanium diboride layers to the thickness of the metallic material layers being between 0.5 and 2,
- each of the titanium diboride layers having a thickness between 0.3 micrometer and 1 micrometer,
- the metallic material having a relatively high elastic modulus, each of the metallic material layers having a thickness between 0.3 micrometer and 1 micrometer, the metallic material being selected from the group consisting of tungsten, an alloy of tungsten, nickel and an alloy of nickel.
A multiple layer erosion resistant coating on a surface of a substrate,
- said coating comprising layers of titanium diboride alternating with layers of metallic material, said coating having at least two layers of titanium diboride and at least two layers of metallic material,
- the metallic material having a relatively high elastic modulus, the metallic material being selected from the group consisting of tungsten and an alloy of tungsten.
Dependencies are inferred from the claim text.