Protective coating for turbine blades

US6149389A · kind A · utility

Assignee

• Forschungszentrum Karlsruhe GmbH · DE

Inventors

• Hans-Henning Hennies · Karlsruhe, DE
• Gunther Kessler · Blankenloch, DE
• Gerd Krafft · Karlsruhe, DE
• Georg Muller · Neuss, DE
• Gustav Schumacher · Altenkirchen, DE

Key dates

• Filing date: Sep 11, 1998
• Grant date: Nov 21, 2000
• Expiry date: Sep 11, 2018

Classification

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

Abstract

On a turbine blade a protective corrosion resistant surface layer consisting of a MCrAlY alloy is generated by melting the surface of the turbine blade with the MCrAlY alloy uniformly distributed over the surface of the turbine blade by a pulsed electron beam to a depth of 5-50 .mu.m whereby a smooth surface is generated.