Friction decreases efficiency. Wherever there is friction, heat is created indicating that some energy islost. Efficiency, wear and friction reduction in greases are such important parameters that, in somecases, the minimum levels of certain friction modifiers are specified. Molybdenum disulfide is probablythe most widely used solid lubricant friction modifier. Recently, due to competition from the steel industry,the cost of molybdenum-containing additives has risen, encouraging researchers and engineers to lookfor cheaper alternatives. In this effort, an evaluation of various friction modifiers has been completed.Results from bench tests to evaluate friction and wear are presented.
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