UN METODO DE IMPREGNAR LA SUPERFICIE DE UN MATERIAL BLANDO,TAL COMO ORO, QUE TIENE BUENAS PROPIEDADES DE CONDUCCION ELECTRICA, CON PARTICULAS DE UN MATERIAL DURO.

摘要

1,228,498. Coatings. AMP Inc. 4 Dec., 1968 [2 Jan., 1968], No. 57475/68. Heading B2E. [Also in Divisions C7 and H1] An electric switch contact of electrodeposited metal, e.g. Ag, Sn, Pt, Rh or Au, is formed with hard-wearing particles of e.g. WC or PtO by placing the contact on a support 28 heating to e.g. 500 to 1100‹F, and then impinging the particles onto the contact by blasts of e.g. nitrogen, which may be heated, from a nozzle 24. The body of the contact may be made of a Ni-Fe alloy. The contacts may be fed to the apparatus as a continuous strip.