Method for anodizing valve metals
US5837121A · kind A · utility
25Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Oct 10, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrolytic solution comprising glycerine and dibasic potassium phosphate. The electrolytic solution has a water content of less than 1000 ppm and is prepared by mixing the glycerine and the dibasic potassium phosphate and then heating to about 150.degree. to 180.degree. C. for about 1 to 12 hours. A method of anodizing a metal comprising forming a film on the metal with an electrolytic solution comprising glycerine and dibasic potassium phosphate. The metal is preferably a valve metal, such as tantalum, and the film is formed at a temperature of 150.degree. C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.