Protective layer system for gas turbine engine component

US6416882B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfram Beele · Ratingen, DE
• Beate Heimberg · Berlin, DE

Key dates

• Filing date: May 1, 2000
• Grant date: Jul 9, 2002
• Expiry date: May 1, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12618
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An article that is particularly well suited for use as a gas turbine engine component has a ceramic thermal insulation layer overlaying a bonding layer. The bonding layer is an alloy comprising iron, cobalt and/or nickel and either:the following group 1 elements (by weight percent):Chromium: 3% to 50%Aluminum: 3% to 20%Yttrium and/or a rare-earth element: 0.01% to 0.5%Lanthanum: 0.1% to 10%Hafnium: 0 to 10%Magnesium: 0 to 10%Silicon: 0 to 2%, orthe following group 2 elements (by weight percent):Chromium: 3% to 50%Aluminum: 3% to 20%Yttrium and/or a rare-earth element: 0 to 0.5%Lanthanum: 0.1% to 10%Hafnium: 0.1% to 10%Magnesium: 0 to 10%Silicon: 0 to 2%.