Process for treatment of oxide films prior to chemical cleaning

Details Process for treatment of oxide films prior to chemical cleaning Process for treatment of oxide films prior to chemical cleaning

1982-03-22

1984-10-09

Kyle, Deborah L.

Compositions

Radioactive compositions

134 2, 134 3, 134 28, 376306, G21F 900

Patent

active

044760477

ABSTRACT:
A process is described for oxidizing pretreatment of chromium (III) oxide containing films, resulting from corrosion of base metal surfaces of piping systems and the like, to render the corrosion films more amenable to conventional chemical cleaning treatments. The process uses a dilute aqueous solution of an iron (VI) salt (FeO.sub.4.sup.2-).

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patent: 4042455 (1977-08-01), Brown
Vincente-Perez et al., "Analytical Chemistry of Uncommon Valences", Chem. Abstracts 87, (1977): 61935b.

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