Coating processes – Electrical product produced – Metal coating
Patent
1984-04-23
1985-11-19
Bueker, Richard
Coating processes
Electrical product produced
Metal coating
4271263, 4271265, 427226, 427405, 4274192, 4274193, C25B 1110
Patent
active
045541760
ABSTRACT:
An electrode comprising a substrate of a conducting metal, a coat of an electrode active substrate, and a layer interposed between the substrate and the coat to serve as a protective barrier for the substrate acquires improved durability by using, as the intermediate layer, a layer having platinum dispersed in a mixed oxide consisting of an oxide of at least one metal selected from the group consisting of titanium and tin, each having a valence of 4, and an oxide of at least one metal selected from the group consisting of tantalum and niobium, each having a valence of 5. The electrode of improved durability is produced by a process which comprises the steps of preparing a substrate of a conducting metal, depositing a solution containing salts of Ti and/or Sn, Ta and/or Nb, and Pt on the substrate, heating the resultant coated substrate under the blanket of an oxidizing gas thereby forming an intermediate layer on the substrate, and subsequently coating the intermediate layer with a layer of an electrode active substance.
REFERENCES:
patent: 3950240 (1976-04-01), Cookfair et al.
patent: 4212725 (1980-07-01), Habermann et al.
Asano Hiroshi
Hirao Kazuhiro
Hirayama Ryuta
Shimamune Takayuki
Bueker Richard
Permelec Electrode Ltd.
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