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:
Jun. 18, 1991
Filed:
Oct. 17, 1990
Kiyoshi Kuruma, Tokyo, JP;
Masaki Abe, Tokyo, JP;
Hiroshi Kagechika, Tokyo, JP;
Shinichi Kagaya, Tokyo, JP;
NKK Corporation, Tokyo, JP;
Abstract
A composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having a Vickers hardness of at least 500 Hv, which comprises: a composite nickel-phosphorus alloy plating layer as a lower layer, formed on at least one surface of a metal sheet, in which Ni.sub.3 P particles and fluorocarbon polymer particles are uniformly dispersed; and a fluorocarbon polymer layer as an upper layer formed by melting the fluorocarbon polymer particles which are exposed on the surface of the composite nickel-phosphorus alloy plating layer as the lower layer. The sum of a phosphorus content in the composite nickel-phosphorus alloy plating layer as the lower layer and a phosphorus content in the Ni.sub.3 P particles is from 1 to 15 wt. % relative to the composite nickel-phosphorus alloy plating layer as the lower layer, and a content of the fluorocarbon polymer particles in the composite nickel-phosphorus alloy plating layer as the lower layer is from 0.3 to 15.2 wt. % relative to the composite nickel-phosphorus alloy plating layer as the lower layer.