Patent · US Active

Coated articles

US8021762B2 · kind B2 · utility

14Cited by

25References

23Claims

0Family size

Assignee

Praxair Technology, Inc. · US

Inventors

Thomas Alan Taylor · Beloit, US
Danny Lee Appleby · Indianapolis, US
Albert Feuerstein · Neuberg, DE
Ann Bolcavage · Indianapolis, US
Neil Hitchman · Carmel, US

Key dates

Filing date	Apr 27, 2007
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Feb 9, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2991
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

This invention relates to articles coated with a thermally sprayed coating of a high purity yttria or ytterbia stabilized zirconia powder, said high purity yttria or ytterbia stabilized zirconia powder comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). The articles include, for example, blades, vanes and seal surfaces of gas turbine engines coated with a thermal barrier coating.

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