公开(公告)号：US20150252487A1

公开(公告)日：2015-09-10

申请号：US14200546

申请日：2014-03-07

Applicant: MacDermid Acumen, Inc.

Inventor： Marc Mertens ,  Richard Tooth ,  Trevor Pearson ,  Roderick D. Herdman ,  Terence Clarke

IPC: C25D3/06

CPC classification number: C25D3/06 ,  C25D5/48 ,  C25D9/08 ,  Y10T428/12854

Abstract: 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.

Abstract translation: 描述了一种处理衬底的方法，其中衬底包括由三价铬电解质沉积的层。 该方法包括以下步骤：在电解质中提供阳极和镀有铬（III）的底物作为阴极，其包括（i）三价铬盐; 和（ii）复合物; 并在阳极和阴极之间通过电流以钝化镀铬（III）的衬底。 可以首先将衬底镀覆镀镍层，以使镀铬层（III）沉积在镀镍层上。

公开(公告)号：US10415148B2

公开(公告)日：2019-09-17

申请号：US14200546

申请日：2014-03-07

Applicant: MacDermid Acumen, Inc.

Inventor： Marc Mertens ,  Richard Tooth ,  Trevor Pearson ,  Roderick D. Herdman ,  Terence Clarke

IPC: C25D11/38 ,  C25D3/06 ,  C25D9/08 ,  C25D5/48

Abstract: 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.