Alkanolamine-phosphoric acid anodizing electrolyte
US6480371B1 · kind B1 · utility
20Cited by
20References
22Claims
0Family size
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Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrolytes containing water, phosphoric acid, at least one organic solvent, and at least one alkanolamine can be used for anodizing valve metals prepared from metal powder having a surface area of least 0.35 m2/g or 35,000 CV/g. The anodizing electrolytes have relatively high conductivity and are capable of being used at high anodizing currents. The anodic film produced by these electrolytes on valve metals is of substantially uniform thickness and has improved electrical parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.