Method of anodizing porous tantalum
US4052273A · kind A · utility
7Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1974 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Jun 10, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of anodizing porous tantalum material suitable for making a porous tantalum capacitor pellet or slug having decreased current leakage is described. After a pellet is anodized at a maximum predetermined desired voltage, it is removed from the anodizing bath and heated to a temperature of between 150.degree. C. and 300.degree. C. The pellet is maintained at such temperature for at least three minutes and then returned to the anodizing bath, at least once, and subjected to more electrical current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.