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:
Jul. 24, 1990
Filed:
Dec. 14, 1989
Vinod K Sarin, Lexington, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
A co-deposition process for producing a wear resistant article, such as a cutting tool. Gaseous halides of two or more of Si, B, Al, Y, Ti, Zr, Hf, V, Nb, Ta, Mo, and W, with other reactants including a volatile nitrogen source, for example N.sub.2 or NH.sub.3, are passed over a hard refractory at a temperature above about 800.degree. C., and 1 torr to about ambient pressure to form a composite refactory coating layer on the substrate. The coating is a continuous first-phase nitride matrix having particles of at least one different nitride dispersed therein. Oxynitrides may be produced by including a volatile oxygen source, for example NO or NO.sub.2, in the gas mixture.