A Survey of Solid Lubricant Technology
ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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New developments in the areas of solid lubricant powders, bonded films, and self- lubricating composites have been reviewed along with new application techniques by the Research Directorate, Weapons Laboratory at Rock Island. Recently synthesized lubricant solids include sulfides, selenides and tellurides of heavy metals. Some of these new materials have been incorporated into oils, greases, dry films, and composites with resulting improved properties such as lower friction coefficients, greater oxidation stability, and chemical stability. The high temperature and wear life properties of bonded solid film lubricants have been improved by use of new organic binder materials such as polyimides, polybenzimidazoles, and polybenzothiazoles. The use of inorganic binders of silicates, phosphates, and fluorides has extended the temperatures to 1200 F with some impairment of performance at room temperatures. New techniques for applying solid lubricants are those of plasma spraying, electrophoresis, electrodeposition, vacuum deposition, and ion plating. Plastic composites have been improved for higher strength and heat stability by use of aromatic polyimides. Polytetrafluoroethylene-based composites have been improved in high strength properties by use of glass and carbon fibers.
- Lubricants and Hydraulic Fluids