Composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having high hardness and method for manufacturing same
US5024900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.