Accession Number : AD0696611

Title :   INFLUENCE OF COUNTERBODY MATERIAL ON FRICTION BETWEEN METAL-GRAPHITE PAIR,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Grigorenko,L. P. ; Plutalova,L. A. ; Rovinskii,B. M. ; Finkelshtein,G. B.

Report Date : 03 APR 1969

Pagination or Media Count : 14

Abstract : The nature of the graphite powder obtained as a result of friction at the AG-1500 graphite-metal interface was studied for four metals: 1Kh18N9 steel, M-3 copper, LS-59-1 brass, and electrolytically deposited chromium. The coefficients of friction for the different metal surfaces were determined experimentally in air and vacuum, and at a relative rate of motion. The nature of the graphite powder was studied by x-ray and electron microscopy technique. Micrographs of the graphite layer formed on the metal surfaces are presented. The size of graphite crystallites formed on the metal surface was estimated after the method of B. E. Warren. It was found that the nature of the counter-body material of the metal-graphite pair affects the structure of the graphite layer on the surface of the metal and the wear mechanism of the graphite surface. However, for applied pressures in excess of the critical pressure (so-called conditions of extreme wear), the mechanism of graphite wear is independent of the nature of the metallic surface. (Author)

Descriptors :   (*GRAPHITE, FRICTION), STEEL, COPPER, CHROMIUM, BRASS, WEAR RESISTANCE, SURFACE PROPERTIES, USSR

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE