Non-chromate pitting and general corrosion inhibitors for alumin

Details Non-chromate pitting and general corrosion inhibitors for alumin Non-chromate pitting and general corrosion inhibitors for alumin

1977-03-03

1978-04-18

Richman, Barry S.

Compositions

Preservative agents

Anti-corrosion

21 27R, C23F 1108, C09K 300

Patent

active

040850633

ABSTRACT:
A method for inhibiting pitting and corrosion and a pitting and general corrosion inhibitor for a water-cooled system which includes aluminum water-cooled members which have water-carrying channels formed therein and including other metal or metals. The pitting and general corrosion inhibitor is a mixture of water-soluble nitrate and water-soluble metasilicate, the combination of which exhibits a pronounced synergistic effect in providing excellent pitting and general corrosion resistance for aluminum exposed to aqueous environments.

REFERENCES:
patent: 2153952 (1939-04-01), Bayes
patent: 2348678 (1944-05-01), George
patent: 2560839 (1951-07-01), Ayo et al.
patent: 3340001 (1967-09-01), Thornhill
patent: 3630752 (1971-12-01), Scott
patent: 3655582 (1972-04-01), Dupre et al.
patent: 3711246 (1973-01-01), Foroulis
patent: 3948792 (1976-04-01), Watsen et al.

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