Article having a superalloy substrate and an enrichment layer placed thereon, and methods of its manufacturing

US6139976A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Norbert Czech · Dorsten, DE
• Knut Halberstadt · Mülheim, DE
• John Smith · Burnsville, US
• Adrian Kempster · Huntingdon, GB

Key dates

• Filing date: Jun 7, 1999
• Grant date: Oct 31, 2000
• Expiry date: Jun 7, 2019

Classification

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

Abstract

The invention relates to an article of manufacture comprising: a substrate composed of a superalloy containing chromium and a base element selected from the group consisting of iron, cobalt, and nickel; and an enrichment layer containing chromium and placed on the substrate. Therein, the enrichment layer comprises a continuous matrix composed of a gamma-phase solid solution of chromium in the base element. The invention also relates to the manufacture of such an article. The article may in particular be a gas turbine component.