The use of molybdenum disulfide MoS2 as a solid film lubricant in applications where designs or temperatures preclude liquid lubricants is dependent upon successful bonding of the powder to the surface to be lubricated. An experimental investigation was conducted to determine the basic mechanism of bonding and to extend application of the bonding to a variety of materials. The results indicated that when MoS2 was applied to a surface as a mixture of M0S2 powder and some liquid vehicles, the liquid vehicle decomposes or polymerizes to a resin which binds the particles of M0S2 together and to the surface to be lubricated. By use of resin-forming viscous liquids such as asphalt-base varnish, silicones, glycerin, ethylene glycol, polyglycol ether, and corn syrup, MoS2 can be bonded to materials such as steel, aluminum, brass, stainless steel, and glass. The reduction of Fe2O3, formed by preheating steel in air, to Fe3O4 by one of the liquid vehicles (syrup) improves the frictional properties of the solid lubricating film.nRubbing of MoSg2 whether dusted or built up on or bonded by a resin to a surface produced distinct preferred orientation.
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