Accession Number : AD0777087

Title :   Surface Interactions and Lubrication Response of Silicon Nitride Bearing Elements.

Descriptive Note : Final rept. Nov 72-Nov 73,

Corporate Author : SKF INDUSTRIES INC KING OF PRUSSIA PA RESEARCH LAB

Personal Author(s) : Dalal,H. ; Chiu,Y. P. ; McCool,J. I. ; Gustafsson,O. G.

Report Date : FEB 1974

Pagination or Media Count : 111

Abstract : The report summarizes results of a fundamental investigation of the suitability of silicon nitride as a rolling bearing material with emphasis on its interactive behavior with lubricating fluids. The need for a light-weight bearing material in critical high-speed turbine applications is discussed and the potential benefits of silicon nitride in particular are reviewed. The wettability characteristics of six lubricants on a silicon nitride surface were measured to determine which lubricants are apt to be successful with silicon nitride bearing components in permitting the replenishment of lubricant onto the rolled-over tracks which is vital for the maintenance of an elastohydrodynamic (EHD) film and the consequent prevention of surface initiated fatigue. (Modified author abstract)

Descriptors :   *Antifriction bearings, *Silicon nitrides, Bearings, Ceramic materials, Lubricants, Lubrication, Interactions

Subject Categories : Lubricants and Hydraulic Fluids
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE