Composition and process for desmutting and deoxidizing without smutting
US5393447A · kind A · utility
13Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1993 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jul 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A chromium and ferricyanide free aqueous deoxidizer/desmutter for aluminum and magnesium alloys contains nitric acid, ferric ions, persulfate, and molybdate and preferably also sulfate, fluoride, and ethoxylated acetylenic diol surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.