Patent · US Active

MCrAlY bond coat with enhanced Yttrium layer

US9012032B1 · kind B1 · utility

2Cited by

2References

18Claims

0Family size

Assignee

U.S. Department of Energy · US

Inventors

Paul D. Jablonski · Salem, US
Jeffrey A. Hawk · Corvallis, US

Key dates

Filing date	Oct 29, 2013
Grant date	Apr 21, 2015
Priority date	—
Expiry date	Dec 14, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/265
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

One or more embodiments relates to an MCrAlY bond coat comprising an MCrAlY layer in contact with a Y—Al2O3 layer. The MCrAlY layer is comprised of a γ-M solid solution, a β-MAl intermetallic phase, and Y-type intermetallics. The Y—Al2O3 layer is comprised of Yttrium atoms coordinated with oxygen atoms comprising the Al2O3 lattice. Both the MCrAlY layer and the Y—Al2O3 layer have a substantial absence of Y—Al oxides, providing advantage in the maintainability of the Yttrium reservoir within the MCrAlY bulk. The MCrAlY bond coat may be fabricated through application of a Y2O3 paste to an MCrAlY material, followed by heating in a non-oxidizing environment.

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