公开(公告)号：US09347144B2

公开(公告)日：2016-05-24

申请号：US13593690

申请日：2012-08-24

申请人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

发明人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

IPC分类号： C25D15/00 ,  C25D3/56 ,  C25D3/04 ,  C25D3/06 ,  C25D3/08

CPC分类号： C25D3/06 ,  C25D3/08 ,  C25D5/14 ,  C25D15/00

摘要： An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.

摘要翻译： 提供了包含三价铬离子的酸性三价铬电解质水溶液和用于保持溶液中三价铬离子的络合剂，其中含水电解质包含能够在具有所需暗色调的基底上产生涂层的添加剂。 添加剂通常包含胶体二氧化硅的分散体和选自硫氰酸根离子和/或铁离子的另外的添加剂。 电解质用于通过电沉积在衬底上生产所需的暗色装饰铬涂层的方法。

公开(公告)号：US20120111731A1

公开(公告)日：2012-05-10

申请号：US12940249

申请日：2010-11-05

申请人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

发明人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

IPC分类号： C25D3/06 ,  C25D3/10

CPC分类号： C25D3/06 ,  C25D3/08 ,  C25D5/14 ,  C25D15/00

摘要： An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition.