Metal-coating a metallic substrate

Details Metal-coating a metallic substrate Metal-coating a metallic substrate

1984-03-01

1984-10-16

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 635, 427320, 427328, 427319, 427422, B05D 300

Patent

active

044772912

ABSTRACT:
Aluminium is coated on steel strip. The steel strip is heated in hydrogen to reduce surface oxides to iron, and is then sprayed at 400.degree. C. with nitrogen-atomized molten aluminium to a depth of 150 microns. Still in nitrogen/hydrogen, at 350.degree. C., the coated strip is rolled. Under these conditions, the aluminium is subjected to very high compressive stress (compared with its yield stress) while the steel does not even reach its yield stress.

REFERENCES:
patent: 3959030 (1976-05-01), Satake
patent: 4333755 (1982-06-01), Mahrees

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