Research/Patents/US 5277936
US 5277936

OXIDE CONTAINING MCRA1Y-TYPE OVERLAY COATINGS

Assignee

UNITED TECHNOLOGIES CORPORATION, HARTFORD, CT. A CORP. OF DE.

Filed

Nov 19, 1987

Granted

Jan 11, 1994

Location

VERNON CT US

Abstract

The oxidation resistance of MCrAlY-type overlay coatings is improved by incorporating small discrete oxide particles into the coating. The particles are preferably yttrium oxide, and the coating is applied by simultaneously plasma spraying MCrAlY-type powder particles and oxide particles onto a substrate in a nonoxidizing atmosphere. Improvements in resistance to rumpling has also been observed in coatings applied according to this invention.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 16, 1989

Rescinded

Mar 10, 1993

Duration

3 years, 4 months

Inventor

  • 1WALTER E. OLSON

Technology Domains

Click a domain to browse all patents in this category.

Back to patent indexSource: USPTO 35 USC §181 secrecy order records