Plasma Sprayed Resistors

[摘要] A range of films of mixed composition, prepared by arc plasma spraying, has been investigated. Both free powderand powder in a plastic binder forming a rod have been used in the spray process. A variety of mixtures ofinsulators, metals and semiconductors has been examined and it is shown that resistivity/temperature curvesfor the specimens produced have in general two points of inflection, the temperatures of which vary withcomposition. This allows prediction of a composition giving low T.C.R. at room temperatures for any givenmetal/semiconductor combination. A qualitative theoretical model explaining this effect is presented. It has alsobeen demonstrated that a conductor/insulator combination need not necessarily exhibit a sharp transition.This allows a broad range of resistance values to be obtained simply by varying composition.

[学科分类] 工程和技术（综合）