Selective decomposition of a chromium carbide coating from a chromium carbide coated nickel alloy substrate
US4851093A · kind A · utility
6Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jun 6, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25F5/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A stripping process for the removal of plasma spray applied chromium carbide-nickel chromium coatings from nickel base alloy substrates is disclosed. The coating is decomposed electrolytically by immersing the coated substrate in an alkaline metal hydroxide solution to form the anode of an electrolytic cell and imposing a potential difference across the cells sufficient to decompose the coating without affecting the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.