Process for inhibiting the corrosion of a mass of metal in contact with an acid bath containing ferric ions
US4765958A · kind A · utility
2Cited by
0References
9Claims
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Assignee
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Key dates
| Filing date | Apr 9, 1985 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Apr 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Process for inhibiting the corrosion of a mass of metal (2) in contact with an acid bath (3) containing ferric ions, according to which at least a part of the bath (3) is circulated through a stack of felts (10) made of carbon or graphite, alternating with perforated plates made of iron or an iron alloy (9). The process applies to the pickling of metallurgical products made of steel in hydrochloric acid baths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.