Abstract
Tribological properties of Fe–Mo type disk specimens were investigated against ASTM 52100 steel balls under the lubrication of poly-alpha-olefin (PAO) and PAO containing 1.5mass% alkyl-phosphonic acid-triazole-methanamine (PN additive). Both the Fe7Mo6-based alloy and Mo disk specimens exhibited lower friction and lower wear rates than the Fe and gray cast iron disk specimens under the lubrication of PAO. The friction coefficients of the Fe7Mo6-based alloy disk specimens were reduced to 0.07 by adding 1.5mass% PN additive to PAO. No wear volume loss was observed on the Fe7Mo6-based alloy disk specimens when they were lubricated with PAO containing 1.5mass% PN additive.
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