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US5024900A
Expired / Lapsed
US
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Composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having high hardness and method for manufacturing same
Assignee: JFE Engineering Corp
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Filing: 1990-10-17
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Granted: 1991-06-18
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Expires: 2010-10-17
Abstract
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 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 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.
Inventors
- 👤 Kiyoshi Kuruma
- 👤 Masaki Abe
- 👤 Hiroshi Kagechika
- 👤 Shinichi Kagaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:22
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/48; C25D5/50; B; B30; B30B; B30B15/00; B30B15/06; B30B15/062; C25D15/00; C25D15/02; C25D3/00; C25D3/02; C25D3/56; C25D3/562; H; H05; H05K; H05K3/00; H05K3/02; H05K3/022; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972; Y10T428/31504; Y10T428/31678; Y10T428/31786
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
163 words
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 mating plating layer formed on at least one surface of a metal sheet, in which Ni 3 P particles and fluorocarbon polymer particles are uniformly dispersed, the sum of a phosphorus content in the matrix of said composite nickel-phosphorus alloy plating layer and a phosphorus content in said Ni 3 P particles being within a range of from 1 to 15 wt. % relative to said composite nickel-phosphorus alloy plating layer and a content of said fluorocarbon polymer particles in said composite nickel-phosphorus alloy plating layer being within a range of from 0.3 to 15.2 wt. % relative to said composite nickel-phosphorus alloy plating layer; and a fluorocarbon polymer layer formed on said composite nickel-phosphorus alloy plating layer by melting said fluorocarbon polymer particles which are exposed on the surface of said composite nickel-phosphorus alloy plating layer.
Claim 2
Dependent Claim
163 words
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 mating plating layer formed on at least one surface of a metal sheet, in which Ni 3 P particles and fluorocarbon polymer particles are uniformly dispersed, the sum of a phosphorus content in the matrix of said composite nickel-phosphorus alloy plating layer and a phosphorus content in said Ni 3 P particles being within a range of from 1 to 15 wt. % relative to said composite nickel-phosphorus alloy plating layer and a content of said fluorocarbon polymer particles in said composite nickel-phosphorus alloy plating layer being within a range of from 0.3 to 15.2 wt. % relative to said composite nickel-phosphorus alloy plating layer; and a fluorocarbon polymer layer formed on said composite nickel-phosphorus alloy plating layer by melting said fluorocarbon polymer particles which are exposed on the surface of said composite nickel-phosphorus alloy plating layer.
Claim 3
Dependent Claim
22 words
A composite nickel-phosphorus alloy plated metal sheet as claimed in claim 1, wherein: said metal sheet comprises steel or an aluminum alloy.
Claim 4
Dependent Claim
38 words
A composite nickel-phosphorus alloy plated metal sheet as claimed in claim 1, wherein: said fluorocarbon polymer particles in said composite nickel-phosphorus alloy plating layer have an average particle size within a range of from 0.01 to 10 μm.
Claim 5
Dependent Claim
39 words
A composite nickel-phosphorus alloy plated metal sheet as claimed in claim 3, wherein: said fluorocarbon polymer particles in said composite nickel-phosphorus alloy plating layer have an average particle size within a range of from 0.05 to under 0.3 μm.
Claim 6
Dependent Claim
32 words
A composite nickel-phosphorus alloy plated metal sheet as claimed in claim 1, wherein: said composite nickel-phosphorus alloy plating layer has an average thickness within a range of from 0.09 to 99 μm.
Claim 7
Dependent Claim
30 words
A composite nickel-phosphorus alloy plated metal sheet as claimed in claim 1, wherein: said fluorocarbon polymer layer has an average thickness within a range of from 0.01 to 1 μm.
Claim 8
Independent Claim
292 words
A method for manufacturing a composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having a Vickers hardness of at least 500 Hv, which comprises the steps of: electroplating a metal sheet in a composite nickel electroplating bath containing phosphorous acid in an amount of from 5 to 50 g/l and fluorocarbon polymer particles in an amount of from 1 to 50 g/l, to form, on at least one surface of said metal sheet, a composite nickel-phosphorus alloy plating layer in which said fluorocarbon polymer particles are uniformly dispersed; and then heating said metal sheet having said composite nickel-phosphorus alloy plating layer thus formed on said at least one surface of said metal sheet to a temperature within a range of from 325° to 400° C. for a period of time of from 10 minutes to 3 hours, to melt said fluorocarbon polymer particles which are exposed on a surface of said composite nickel-phosphorus alloy plating layer so as to form a fluorocarbon polymer layer on said composite nickel-phosphorus alloy plating layer and simultaneously, to cause at least part of nickel in said composite nickel-phosphorus alloy plating layer to react with at least part of phosphorus in said composite nickel-phosphorus alloy plating layer to cause precipitation of Ni 3 P particles so as to uniformly disperse the thus precipitated Ni 3 P particles together with said fluorocarbon polymer particles into said composite nickel-phosphorus alloy plating layer thereby manufacturing said composite nickel-phosphorus alloy plated metal sheet comprising said composite nickel-phosphorus alloy plating layer formed on said at least one surface of said metal sheet, in which said Ni 3 P particles and said fluorocarbon polymer particles are uniformly dispersed, and said fluorocarbon polymer layer formed on said composite nickel-phosphorus alloy plating layer.
Claim 9
Independent Claim
292 words
A method for manufacturing a composite nickel-phosphorus alloy plated metal sheet excellent in strippability and having a Vickers hardness of at least 500 Hv, which comprises the steps of: electroplating a metal sheet in a composite nickel electroplating bath containing phosphorous acid in an amount of from 5 to 50 g/l and fluorocarbon polymer particles in an amount of from 1 to 50 g/l, to form, on at least one surface of said metal sheet, a composite nickel-phosphorus alloy plating layer in which said fluorocarbon polymer particles are uniformly dispersed; and then heating said metal sheet having said composite nickel-phosphorus alloy plating layer thus formed on said at least one surface of said metal sheet to a temperature within a range of from 325° to 400° C. for a period of time of from 10 minutes to 3 hours, to melt said fluorocarbon polymer particles which are exposed on a surface of said composite nickel-phosphorus alloy plating layer so as to form a fluorocarbon polymer layer on said composite nickel-phosphorus alloy plating layer and simultaneously, to cause at least part of nickel in said composite nickel-phosphorus alloy plating layer to react with at least part of phosphorus in said composite nickel-phosphorus alloy plating layer to cause precipitation of Ni 3 P particles so as to uniformly disperse the thus precipitated Ni 3 P particles together with said fluorocarbon polymer particles into said composite nickel-phosphorus alloy plating layer thereby manufacturing said composite nickel-phosphorus alloy plated metal sheet comprising said composite nickel-phosphorus alloy plating layer formed on said at least one surface of said metal sheet, in which said Ni 3 P particles and said fluorocarbon polymer particles are uniformly dispersed, and said fluorocarbon polymer layer formed on said composite nickel-phosphorus alloy plating layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |