Repair of turbine components and solder alloy therefor

US8544716B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Bernd Daniels · Puchheim, DE
• Michael Hillen · Olching, DE

Key dates

• Filing date: Aug 5, 2010
• Grant date: Oct 1, 2013
• Expiry date: Aug 5, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49318
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for repairing a component of a gas turbine and a solder alloy are disclosed. In an embodiment, the method includes applying the solder alloy to the component in an area of the component having a punctiform damage or a linear imperfection, where the solder alloy is a mixture of a NiCoCrAlY alloy and a Ni-based solder. A molded repair part made of the solder alloy is applied to the component in an area of the component having a planar defect. The component is heat treated to solder the molded repair part on the component and to solder the solder alloy applied to the component in the area of the component having the punctiform damage or the linear imperfection. The component is cooled after the heat treating and, following the cooling, the component is further heat treated.