Method for desmutting aluminum alloys having a highly reflective surface
US5417819A · kind A · utility
19Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1994 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Jan 21, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of forming a highly reflective surface on aluminum alloys, the composition comprising (a) brightening the surface of a body formed from an aluminum alloy; and (b) desmutting the freshly brightened body in a bath. The desmutting bath comprises 10-100 volume percent nitric acid; 0-60 volume percent sulfuric acid; 0-50 volume percent water; and at least 15 grams per liter of a source of bifluoride. Ammonium fluoride is the preferred source of fluoride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.