In this paper TE77 tribometer was conducted to finish the wear test in various combinations of contact stress and sliding speed with reciprocating sliding mode. Roller on flat contact type was used to evaluate the effects of ZDDP additive on ADI wear resistance performance in the extreme pressure lubrication conditions. However, paraffin oil MN and MN + 1 % ZDDP mixed oil was used as the lubricant in 130℃ testing temperature. In addition, SEM was used to inspect the worn surface, the results show that surface fatigue abrasive wear tribochemical wear were the mainly wear mechanisms in this test conditions. Finally, the experiment results show that the wear resistance ability of ADI can be improved 50～90 % in ZDDP additive mixed lubricant compared with MN oil.
Austempered ductile iron ZDDP wear