Accession Number : AD0698539

Title :   INVESTIGATING ELECTROEROSIONAL PHENOMENA ON THE SURFACE OF A TWO-LAYERED ELECTRODE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bakuto,I. A. ; Nekrashevich,I. G.

Report Date : 15 AUG 1969

Pagination or Media Count : 13

Abstract : Bimetal electrodes Cu-Sn and Sn-Bi were prepared and used as anodes vs. a conical Fe cathode during sq. pulse discharges (900 A at 240 Mu sec) in kerosene. The Cu-Sn layers were perpendicular, while Sn-Bi were parallel to the axis of the discharge. After a series of discharges, erosion was determined by the weight loss method, and the discharge area observed with a microscope. The erosion values of the 2-layer electrode and the Fe cathode were plotted vs. the thickness of the Cu layer. The erosion of both electrodes decreased when the thickness of the Cu layer increased within the range 0.02-1 mm. A similar relation was observed between the area of erosion and Cu thickness. The exponential results were analyzed on the basis of the migration theory for the mechanism of electric erosion. The derived equations defining erosion losses of 2-layer electrodes are in agreement with exponential data. A linear relation exists between the erosion losses of Bi and Sn when the 2 layers are parallel to the discharge axis. The good agreement between the exigencies of the migration theory and exponential results in both cases offers a possibility for evaluating erosion under different conditions. The theoretical conceptions can be very helpful for the practical estimation of plasma electric discharges between metal electrodes. (Author)

Descriptors :   (*ELECTRODES, EROSION), TRANSPORT PROPERTIES, ELECTRIC DISCHARGES, COPPER, TIN, BISMUTH, COMPOSITE MATERIALS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE