Method of forming an electrode on a substrate

Details Method of forming an electrode on a substrate Method of forming an electrode on a substrate

H - Electricity

01

C

H01C 17/28 (2006.01) H01L 41/22 (2006.01)

Patent

CA 2256646

An electrode is formed on a substrate such as a varistor, a PTC ceramic, or a piezoelectric ceramic by coating a surface of the substrate with a combination of a metal source and a source of reducing carbon. The substrate and/or the combination is an absorber of microwave radiation. Irradiation with microwave radiation causes a carbothermic reduction to occur, converting the metal source to a metal electrode on the substrate.

Une électrode est formée sur un substrat (1) tel qu'un varistor, une céramique à coefficient de température positif, ou une céramique piézo-électrique en recouvrant la surface du substrat avec une combinaison d'une source métallique et d'une source de charbon réducteur (2). Le substrat et/ou la combinaison est un absorbant du rayonnement de micro-ondes. L'exposition au rayonnement de micro-ondes provoque une réduction carbothermique, qui transforme la source métallique en une électrode métallique (3) sur le substrat.

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