Abstract
The effects of some new synthesized additives on the friction and wear properties of a Cr 2O 3 coating were studied using a block-on-ring tester under ambient conditions. The results indicate that, compared with base oil, BMDDP, BMDOC and BMDT have friction-reducing action, BMDDP is effective in reducing wear but the others increase it. Test parameters such as load and sliding time have a great influence on the wear properties of the Cr 2O 3 coating but little influence on the friction properties. Scanning electron microscopy and X-ray photoelectron spectroscopy analyses show that the wear-reducing action of BMDDP is a result of the adsorption of its decomposed products and the formation of tribochemical reaction films on the rubbing surfaces, the wear-increasing actions of BMDOC and BMDT mainly result from their decomposed product H 2SO 4, leading to corrosive wear.
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