Magnesium containing protective coating for ferrous metal

Details Magnesium containing protective coating for ferrous metal Magnesium containing protective coating for ferrous metal

1976-05-28

1978-04-11

Miller, Edward A.

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106193M, 106 1444, 149 37, C09D 510

Patent

active

040837262

ABSTRACT:
A coating for protecting steel from corrosion is a mixture of an organic solvent and binder, powdered magnesium, and a passivating agent which has a pH greater than about 8 when in contact with water. Steel covered with the coating is cut or welded by the application of heat sufficient to melt the magnesium and underlying steel. In some embodiments, the pyrolysis products of the coating create an odor which warns of the build-up of nitrogen oxides produced by typical welding and coating operations.

REFERENCES:
patent: 2933400 (1960-04-01), Wurbs
patent: 2988438 (1961-06-01), Allovio
patent: 3067045 (1962-12-01), McMahon
patent: 3094445 (1963-06-01), Busk et al.
patent: 3118048 (1964-01-01), Fisher et al.
patent: 3257801 (1966-06-01), Martinez et al.
patent: 3625855 (1971-12-01), Douda
patent: 3839051 (1974-10-01), Cerveny
Uhlig, The Corrosion Handbook, pp. xxviii-xxx, 20-33 and 905-908, John Wiley & Sons, Inc. (1948) New York.

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