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:
Oct. 23, 1984
Filed:
Dec. 20, 1983
Nippon Tungsten Co., Ltd., Fukuoka, JP;
Abstract
Tungsten carbide and nickel-phosphorus alloy coexist in individual particles. The composite powder produced by a mechanical mix of these two substances consists of 30.about.95 percent by weight of tungsten carbide and valanced nickel-phosphorus alloy. This powder is sprayed to the ferrous base material, resulting in a uniform dispersion of both tungsten carbide and nickel-phosphorus, causing tight adhesion to the surface because the tungsten carbide and nickel-phosphorus alloy coexist in individual particles in the composite. A hard metal coating is produced having high hardness and excellent wear resistance, after the surface of the hard metal coating is heated and the high temperature of the nickel-phosphorus alloy causes a liquid phase under the condition of a nonoxidizing atmosphere. This hard metal coating is used for various kinds of the wear-resistant materials.