Particulate contaminated lubricants can be detrimental to any tribosystem. Debris can originate from the external environment, be unintentionally introduced during fabrication, or be generated internally during operation. These particles, if not carefully filtered out, can have serious implications on the integrity of a tribosystem. This study focused on the abrasive wear observed from four-ball wear tests in the presence of lubricant with particulate contaminants. The contaminants studied were silicon dioxide sand particles and self generated AISI E-52100 steel particles. The particles were submerged in an industrial EP gear oil. The effects of particle size, composition, and concentration on abrasive wear of sliding interfaces was analyzed.

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