High corrosion resistant plated composite steel strip

Details High corrosion resistant plated composite steel strip High corrosion resistant plated composite steel strip

1988-12-14

1990-03-20

McDowell, Robert

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428626, 428632, 428633, 428659, 428935, B32B 1504, B32B 1518

Patent

active

049100955

ABSTRACT:
An electroplated composite steel strip having a high corrosion resistance comprises a steel strip substrate and a corrosion resistant coating layer which comprises at least a base plating layer comprising a zinc-based metal matrix, a number of corrosion-preventing fine solid particles consisting essentially of core fine particles of, for example, chromate, phosphate, aluminum, molybdenum or titanium compounds, and encapsulated by very thin coating membranes consisting of, for example, SiO.sub.2, Al.sub.2 O.sub.3, ZrO.sub.2 or TiO.sub.2, and optionally a number of additional fine particles consisting essentially of, for example, SiO.sub.2, TiO.sub.2, Cr.sub.2 O.sub.3, Al.sub.2 O.sub.3, ZrO.sub.2, SnO.sub.2 or Sb.sub.2 O.sub.5.

REFERENCES:
patent: 3791801 (1974-02-01), Ariga et al.
patent: 4407899 (1983-10-01), Hara et al.
patent: 4524111 (1985-06-01), Oka et al.
patent: 4775600 (1988-10-01), Adaniya et al.
patent: 4800134 (1989-01-01), Izaki et al.

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