Accession Number : AD0732761

Title :   Self-Lubricating Composite Materials for Naval Aircraft. Differential Thermal Analysis of Self-Lubricating Bearing System Compositions and Wear Debris.

Descriptive Note : Progress rept.,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AERO MATERIALS DEPT

Personal Author(s) : Conte,Alfeo A. , Jr

Report Date : 28 JUN 1971

Pagination or Media Count : 25

Abstract : Differential Thermal Analysis (DTA) was employed as an analytical device in the study of physical and chemical changes associated with high bearing contact area temperatures for self-lubricating Mo-S-Fe and W-S-Fe bearing systems, which were investigated using Falex lubricant equipment. Initial reaction temperatures for the elemental constituents comprising these systems were determined. Wear debris from those self-lubricating systems, which exhibited extended endurance life, was analyzed using the DTA technique. Free energy considerations, together with thermoanalytical results and 'wet' chemical tests, suggest that compound formation, i.e., MoS2 and WS2, is a key factor in achieving extended performance life for these systems. (Author)

Descriptors :   (*BEARINGS, *LUBRICATION), NAVAL AIRCRAFT, POROUS METALS, IRON, MOLYBDENUM, TUNGSTEN, SULFUR, DIFFERENTIAL THERMAL ANALYSIS, WEAR RESISTANCE, REACTION KINETICS

Subject Categories : Lubricants and Hydraulic Fluids
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE