Pickling process in an acid bath of metallic products containing titanium or at least one chemical element of the titanium family
US5338367A · kind A · utility
13Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Nov 18, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/106
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Pickling process in an acid bath containing an oxidant in order to enhance the pickling kinetics, wherein at least one peroxygenated derivative of titanium or at least of one element of the titanium family included in the product to be pickled is formed, the metal being ionized to a higher valency, the formation of the peroxygenated compound is controlled by measurement of the redox potential, and the quantity of oxidizing agent is limited so as to maintain an oxido-reduction potential lower than the passivation potential of the metallic product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.