Patent · US Active

High temperature bond coating with increased oxidation resistance

US9441114B2 · kind B2 · utility

1Cited by

12References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Anand A. Kulkarni · Oviedo, US
Jonathan E. Shipper, Jr. · Sanford, US
Werner Stamm · Mülheim an der Ruhr, DE

Key dates

Filing date	Sep 9, 2011
Grant date	Sep 13, 2016
Priority date	—
Expiry date	May 15, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01D5/288
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A bond coating having high corrosion and oxidation resistance and good compatibility with a thermal barrier coating is disclosed. The bond coating may be an optimized NiCrAlY material with additional materials that eliminates the presence of beta phase for oxidation by replacing the beta phase with a gamma/gamma prime system. The bond coating may also decrease the presence of phases that are detrimental to the mechanical and oxidation properties of the system, such as the sigma and BCC chromium phases. The bond coating may also have a gamma/gamma prime transition temperature that is about 400 degrees Celsius higher than conventional bond coatings, which enables local stresses to be reduced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.