Surface activated amorphous and supersaturated solid solution al

Details Surface activated amorphous and supersaturated solid solution al Surface activated amorphous and supersaturated solid solution al

1986-08-04

1988-09-13

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Surface feature

204293, 148403, C22C 504

Patent

active

047709499

ABSTRACT:
Electrode materials and method for their surface activation are described. Alloys consisting of at least one element of the group consisting of Nb, Ta, Ti and Zr, at least one element of the group consisting of Ru, Rh, Pd, Ir and Pt, and balance being Ni are prepared by methods for preparation of amorphous alloys, and are amorphous or supersaturated solid solution. Their surfaces are activated to enhance electrocatalytic activity by enrichment of electrocatalytically active platinum group elements in the surface region in addition to surface roughening as a result of selective dissolution of Ni, Nb, Ta, Ti and Zr from the alloys during immersion in corrosive solutions. The surface-activated amorphous and supersaturated solid solution alloys possess high electrocatalytic activity and selectivity for a specific reaction as well as high corrosion resistance.

REFERENCES:
patent: 4339270 (1982-07-01), Hashimoto et al.
patent: 4560454 (1985-12-01), Harris et al.
patent: 4609442 (1986-09-01), Tenhover et al.

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