Reduction of loss of zinc by vaporization when heating zinc-alum

Details Reduction of loss of zinc by vaporization when heating zinc-alum Reduction of loss of zinc by vaporization when heating zinc-alum

1980-06-09

1982-05-18

Lewis, Michael L.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

427 34, 427192, 427194, 427428, 427433, 428659, 428939, B32B 1518, B05D 110, B05D 128, B05D 302

Patent

active

043305989

ABSTRACT:
The loss of zinc by vaporization when heating a zinc-aluminum coating to a temperature between about 427.degree. C. and 816.degree. C. (800.degree. F. and 1500.degree. F.) is significantly reduced by applying a zinc-aluminum coating containing about 30 to 75 weight percent zinc and the balance essentially aluminum to a mild carbon steel base which contains titanium in an amount sufficient to combine with all of the carbon in the steel and provide a small excess of uncombined titanium in the steel base, thereby providing a zinc-aluminum coated steel article which has improved corrosion and oxidation resistance when heated at temperatures between about 427.degree. C. and 816.degree. C. (800.degree. F. and 1500.degree. F.).

REFERENCES:
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patent: 3881880 (1975-05-01), Gomersall
patent: 3905780 (1975-09-01), Jasper et al.
patent: 4123261 (1978-10-01), Moren et al.
patent: 4144378 (1979-03-01), Kim
patent: 4264684 (1981-04-01), Allegra et al.

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