Multilayer metal-coated steel sheet

Details Multilayer metal-coated steel sheet Multilayer metal-coated steel sheet

1991-10-09

1993-04-27

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428660, B32B 1518

Patent

active

052060934

ABSTRACT:
A multilayer metal-coated steel sheet comprising as a first layer a Zr coating layer formed on the surface of a steel sheet, and as a second layer an Al coating layer formed on said first layer. As another embodiment, also disclosed is a multilayer metal-coated steel sheet comprising as a first layer a Zr coating layer formed on the surface of a steel sheet, as a second layer an Al-Zr alloy coating layer containing Zr in an amount of 1% by weight to 50% by weight, formed on said first layer, and as a third layer an Al coating layer formed on said second layer.
The multilayer metal-coated steel sheet of the present invention has an improved corrosion resistance, heat resistance and formability.

REFERENCES:
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patent: 2908966 (1959-10-01), Wagner
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patent: 3616301 (1971-10-01), Miyata
patent: 3653852 (1972-04-01), Seiler
patent: 3689232 (1972-09-01), Baba
patent: 3798011 (1974-03-01), Sharp
patent: 4906533 (1990-03-01), Kagechika et al.
patent: 4963440 (1990-10-01), Shimoyori et al.

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