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Process for producing metallic film resistors

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TLDR
In this article, the authors describe a process for producing metallic film resistors, which involves forming two or more layers of different metals on the surface of a movie set.
Abstract
A PROCESS FOR PRODUCING METALLIC FILM RESISTORS, COMPRISING FORMING TWO OR MORE LAYERS OF DIFFERENT METALS ON THE SURFACE OF HEAT-RESISTANT INSULATING SUBSTRATES ONE ON THE OTHER BY NON-ELECTROLYTIC PLATING OR ELECTROPLATING AND THEREAFTER SUBJECTING THE COATED SUBSTRATES TO HEAT TREATMENT, WHEREBY THE DIFFERENT METALS ARE ALLOYED BY INTERLAYER DIFFUSION AND THUS A METAL ALLOY COATING IS FORMED ON THE SURFACE OF THE INSULATINGSUBSTRATES.

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