Effects of anti-wear additives on friction and wear properties of Cr2O3 coating |
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Authors: | Jianjun Wei Qunji Xue Hanqing Wang |
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Abstract: | The effects of some anti-wear additives on the friction and wear behaviour of plasma-sprayed Cr2O3 coating were investigated using a block-on-ring tester at ambient conditions. The results show that zinc dialkyldithiophosphate (ZDDP), tricesyl phosphate (TCP) and tributyl phosphate (TBP) significantly reduce the wear of Cr2O3 coating lubricated by paraffin oil. Additive concentrations as well as sliding time have great influence on the wear. The friction coefficient varies slightly with test conditions. The analysis by XPS of worn surfaces indicates that the wear resistance of these additives is due to the formation of tribochemical reaction films by reacting with Cr2O3 coatings. |
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Keywords: | anti-wear additives Cr2O3 coating friction and wear properties worn surfaces XPS |
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