Method of inhibiting sulfidation and modifying deposits

Details Method of inhibiting sulfidation and modifying deposits Method of inhibiting sulfidation and modifying deposits

1976-05-07

1977-07-12

Gwinnell, Harry J.

Coating processes

Coating by vapor, gas, or smoke

Metal coating

44 67, 60 3902, 204181, 427 34, 427250, 427423, 428667, C23C 1104, C23C 1108

Patent

active

040355306

ABSTRACT:
A method of inhibiting hot sulfidation corrosion of a metal surface and modifying the characteristics of any deposit thereon comprises the step of applying to such metal surface and any deposit thereon an inhibitor-modifier. The inhibitor-modifier is a mixture of chromium oxide and manganese oxide, the combustion product of a solution containing a soluble chromium compound and a soluble manganese compound, or a combination of the mixture and combustion product. The mixture and the solution contain chromium and manganese in a molar ratio of at least 1:1.

REFERENCES:
patent: 2789049 (1957-04-01), DeLong et al.
patent: 3390026 (1968-06-01), Cerych et al.
patent: 3564565 (1971-02-01), Haberecht et al.
patent: 3581491 (1971-06-01), Bornstein et al.
patent: 3849176 (1974-11-01), Asano et al.
Hawley, Condensed Chemical Dictionary, p. 540 (1971).

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