New Sulfide Addition Agents for Lubricant Materials

Abstract
Two sulfides, AsSbS4, and AsAsS4 were prepared by aqueous precipitation methods. Property studies covered lubricant characteristics, and comparisons were made with As2S3, As2S3, Sb2S3 and Sb2S3. The various compounds were examined as chemical addition agents for diester lubricating grease and organic resin solid film lubricants. Details are presented for lubricant formulation and preparation, as well as laboratory test methods. The single most significant result is the dual response of AsSbS4 to steel-steel and steel-molybdenum. Previous studies have shown that sulfur compounds as a class are preferential lubricants for molybdenum; however, a lubricating effect for steel by metallic sulfides has been essentially limited to MoS2.

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