Accession Number : ADA185010

Title :   Literature Review of Solid Lubrication Mechanisms.

Descriptive Note : Interim rept. Jul 85-Nov 86,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS RESEARCH FACILITY

Personal Author(s) : Kanakia, M D ; Peterson, M B

PDF Url : ADA185010

Report Date : Jul 1987

Pagination or Media Count : 62

Abstract : For this report, five phenomenological models are proposed for solid lubrication. These models are: 1) Viscous flow of the solid lubricant due to strong attachment to both surfaces and with uniform shear across the gap; 2) Plastic flow of solid lubricant; 3) Substrate/film slip model in which the sliding takes place between one substrate and the surface of the film; 4) Interfilm slip model when lubricant film is strongly attached to the two substrate surface. The sliding take place at the interface; and 5) Intercrystalline slip model which is basically a modification of the plastic flow process. The lubricant film is composed of small crystalling blocks of lubricants which slip past each other. The expected tribological behavior is suggested for each model. A review of the literature was conducted to determine which model could be supported by the evidence available. The report includes a discussion of the following topics: Observation of Film Behavior; Substrate Adhesion; Film Formation, Wear, and Failure; Crystal Structure Effects; Surface Chemical Effects; and Frictional Behavior.

Descriptors :   *SOLID LUBRICANTS, *TRIBOLOGY, *MODELS, LUBRICATING FILMS, VISCOUS FLOW, PLASTIC FLOW, WEAR, FRICTION, SLIDING FRICTION, ADHESION, SUBSTRATES

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE