发明公开
EP3114258A1 PASSIVATION OF MICRO-DISCONTINUOUS CHROMIUM DEPOSITED FROM A TRIVALENT ELECTROLYTE
审中-公开
PASSIVIERUNG VON AUS EINEM DREIWERTIGEN ELEKTROLYT ABGESCHIEDENEN MIKRO-DISKONTINUIERLICHEN CHROM
- 专利标题： PASSIVATION OF MICRO-DISCONTINUOUS CHROMIUM DEPOSITED FROM A TRIVALENT ELECTROLYTE
- 专利标题（中）： PASSIVIERUNG VON AUS EINEM DREIWERTIGEN ELEKTROLYT ABGESCHIEDENEN MIKRO-DISKONTINUIERLICHEN CHROM
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申请号： EP15757833.7申请日： 2015-03-05
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公开(公告)号： EP3114258A1公开(公告)日： 2017-01-11
- 发明人: MERTENS, Marc , TOOTH, Richard , HERDMAN, Roderick, D. , CLARKE, Terence , PEARSON, Trevor
- 申请人： MacDermid Acumen, Inc.
- 申请人地址： 245 Freight Street Waterbury, CT 06702 US
- 专利权人： MacDermid Acumen, Inc.
- 当前专利权人： MacDermid Acumen, Inc.
- 当前专利权人地址： 245 Freight Street Waterbury, CT 06702 US
- 代理机构： Jenkins, Peter David
- 优先权： US201414200546 20140307
- 国际公布： WO2015134690 20150911
- 主分类号： C25D3/06
- IPC分类号： C25D3/06 ; C25D5/10 ; C25D5/12 ; C25D5/14 ; C25B1/02
摘要：
A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium(III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium(III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium(III) plated layer is deposited over the nickel plated layer.
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