Development of a Double-Deposited 1000 F Solid Lubricant.
Technical rept. Jan 69-Jan 70,
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
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The purpose of the program was to develop a new and improved solid-lubricant film for application in air environments up to 1000F temperature. The basic film formulation consisted of aluminum phosphate as the bonding agent and graphite, molybdenum diselenide, and tantalum disulfide as the lubricating components. Experiments were performed to find out if the wear life could be prolonged by overcoating the base solid-lubricant film with a second film. The overcoating work was done in two ways first, by spraying with an airbrush, and second, by the method of electrophoretic deposition. The best results at 1000F were obtained with an electrophoretically deposited second coat consisting of MoS2 and B2O3 31 over the AlPO4 film. This B2O-MoS2 second coat ran for three hours and 40 minutes at low wear without failure. The experiments were intentionally terminated at 100,000 revolutions. Such a film will now give measurable wear life at 1000F. Author
- Lubricants and Hydraulic Fluids