Coating processes – Electrical product produced – Metal coating
Patent
1991-07-09
1992-08-18
Beck, Shrive
Coating processes
Electrical product produced
Metal coating
427125, 4271261, 4271263, 4271264, 427191, 4273722, 4273762, 4273763, C23C 2600
Patent
active
051398290
ABSTRACT:
A method for producing an oxygen detection element having uniform pores and an excellent durability against toxic matter contained in the measurement gas. The method includes a first step of applying a paste to be sintered to form a catalytic electrode layer onto at least a part of an oxygen-ion conductive solid-state electrolytic body, and sintering the paste to thereby form said catalytic electrode layer at a predetermined position on said surface of said solid-state electrolytic body after sintering, and a second step of forming an electrode protection layer for coating and protecting at least a part of the catalytic electrode layer either after or simultaneous with the first step. In a first embodiment, the paste contains mainly a noble metal powder acting as a catalyst and an organic metal compound, in a second embodiment mainly co-precipitated powder consisting of a noble metal and a metal hydroxide, and in a third embodiment mainly noble metal powder and a powder of a metal other than a noble metal.
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Kawachi Yoshitake
Minoha Ken
Shiomi Haruhisa
Beck Shrive
Dang Vi Duong
NGK Spark Plug Co. Ltd.
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