Selective nickel stripping compositions and method of stripping
US4554049A · kind A · utility
22Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F1/44
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Stripping solutions comprising hydrogen peroxide and sulfamic acid in correlated amounts are effective for the rapid and selective removal of nickel from mild steel surfaces and nickel, nickel alloy and nickel reaction products from alloy substrates. The compositions contain sulfamate, nitrate and chloride and peroxide ions and, preferably, an iron complexing agent such as ethylene diamine tetraacetic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.