Galvanic protection of steel with zinc alloys

Details Galvanic protection of steel with zinc alloys Galvanic protection of steel with zinc alloys

1988-10-07

1990-04-17

Silverberg, Sam

Stock material or miscellaneous articles

All metal or with adjacent metals

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

420520, 420513, 420434, 427433, B32B 1500

Patent

active

049179667

ABSTRACT:
Galvanic protection of steel is provided by means of coupling thereto of zinc binary alloys of Zn/8 to 18% wt. Co or Zn/20 to 50% wt. Mn with teachings of method of protection, the protected steel having the alloy coupled thereto, as well as the alloys per se. Also, a technique for determining alloys useful for the cathodic protection is taught with the technique including determining the critical cathodic protection potential for steel and the galvanic current and corrosion potential for candidate binary Zn alloy compositions followed by coupling to the steel of one such alloy composition whose determined corrosion potential is lower than the critical corrosion potential for the steel in the corrosive environment in which protection is sought.

REFERENCES:
patent: 4252866 (1941-02-01), Matsudo
patent: 4650724 (1987-03-01), Umino

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