High-temperature protection layer

US7052782B2 · kind B2 · utility

Assignee

• ALSTOM Technology Ltd · CH

Inventors

• Hans-Peter Bossmann · Lauchringen, DE
• Dietrich Eckardt · Ennetbaden, CH
• Klaus Schneider · Waldshut-Tiengen, DE
• Christoph Toennes · Brugg, CH

Key dates

• Filing date: Jul 19, 2004
• Grant date: May 30, 2006
• Expiry date: Jul 19, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A high-temperature protection layer contains (% by weight) 23 to 27% Cr, 4 to 7% Al, 0.1 to 3% Si, 0.1 to 3% Ta, 0.2 to 2% Y, 0.001 to 0.01% B, 0.001 to 0.01% Mg and 0.001 to 0.01% Ca, remainder Ni and inevitable impurities. Optionally, the Al content is in a range from over 5 up to 6% by weight.