The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Nov. 12, 1997
Philip H McCluskey, Manchester, CT (US);
Harry E Eaton, Jr, Woodstock, CT (US);
Daniel R Godin, East Waterboro, ME (US);
George E Foster, Dudley, MA (US);
H David Harter, Munhall, PA (US);
Stephen Chin, Wallingford, CT (US);
Glenn A Cotnoir, Thompson, CT (US);
Charles A Ellis, Stuart, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
Coatings containing at least 85% by volume crystalline mullite with less than 15% by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.