Electrolytic chromium plating method using trivalent chromium
US5560815A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 27, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Jun 27, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A chromium plating method using a plating bath comprising trivalent chromium and an electrode which is an anode comprising an electrode substrate of titanium, tantalum, zirconium, niobium or an alloy thereof, coated with an electrode catalyst comprising at least iridium oxide and, optionally, at least one of titanium, tantalum, niobium, zirconium, tin, antimony, ruthenium, platinum, cobalt, molybdenum, tungsten or an oxide thereof. The anode may be placed directly in the chromium plating bath or may be placed in an anode chamber partitioned from the chromium plating bath with an ion-exchange membrane. The chromium plating method may be a barrel plating method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.