Layer system with double MCrAlX metallic layer

US9556748B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Georg Bostanjoglo · Berlin, DE
• Axel Kaiser · Neuss, DE
• Werner Stamm · Mülheim an der Ruhr, DE
• Jan Steinbach · Berlin, DE
• Dimitrios Thomaidis · Berlin, DE

Key dates

• Filing date: Sep 12, 2011
• Grant date: Jan 31, 2017
• Expiry date: Sep 12, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12944
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Known protective coatings with a high Cr-content and silicon as an additive have brittle phases which become additionally brittle under the influence of carbon during use. The protective coating herein has a double metallic layer that only contains tantalum on the outside contents of the layers.