Journal
TRIBOLOGY INTERNATIONAL
Volume 147, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2020.106176
Keywords
MoDTC; MoO3; Mo2C; a-C:H DLC; Si-DLC
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Molybdenum dithiocarbamate (MoDTC) is well-known as a friction-modifier in engine oil but has wear accelerating effects on DLC/steel sliding contact. Since MoDTC was reported degradable to other materials, the effect of each material on wear acceleration has not been clarified yet. Therefore, it is necessary to divide which Moderived compound has a major role to enhance wear. Thus, powder-type MoDTC, MoO3, Mo2C, MoS2, and Mo were dispersed into Poly-alpha-olefin (PAO), and tested on a-C:H and Si-DLC against steel ball at room temperature. For Mo2C, MoDTC, and MoO3, the specific wear rate of a-C:H was approximately 3.4 x 10(-5), 3.2 x 10(-6) and 1.5 x 10(-6) mm(3)/Nm, respectively. MoDTC indicated higher affection than MoO3 regardless of the particles' hardness. Si-DLC showed better wear prevention compared to a-C:H.
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