含磷抗磨剂对工业齿轮油抗微点蚀性能的影响

采用MPR试验机和FZG试验机考察了亚磷酸烷基酯、芳基磷酸酯和二硫代磷酸酯3种结构不同的含磷抗磨剂在工业齿轮油中的抗微点蚀性能。结果表明:3种含磷抗磨剂的加入对工业齿轮油抗微点蚀性能都有所改善；亚磷酸烷基酯热分解温度高，结构稳定性好，在油样测试时辊子表面微点蚀面积为3.12%，轨道宽度变化率为26.6%，齿轮表面轮廓偏差为5.64μm，表面微点蚀面积为75.12%，试验结果优于加入二硫代磷酸酯和芳基磷酸酯的油样，具有更加优异的抗微点蚀性能。MPR试验机与FZG试验机对油样的抗微点蚀测试结果具有较好的对应性。

EFFECT OF PHOSPHOROUS-CONTAINING ANTI-WEAR AGENT ON MICRO PITTING RESISTANCE OF INDUSTRIAL GEAR OIL

The micropitting resistance of three phosphorous anti-wear agents with different structures of alkyl phosphate, aryl phosphate and phosphorodithioate in industrial gear oil was investigated by MPR and FZG testing machines. The results indicated that three kinds of anti-wear agents could improve the micropitting resistance of gear oils in different degrees. The thermal decomposition temperature of alkyl phosphite ester was high and the structure stability was good. In the oil testing, the micro-pitting area on the roller surface was 3.12%, the track width change rate was 26.6%, the profile deviation of gear surface was 5.64 μm, and the micropitting surface is 75.12%. The experimental results of alkyl phosphite ester were superior to those of phosphorodithioate and aryl phosphate ester and had better resistance to micropitting corrosion performance. The results of MPR tester and FZG testing machine for oil micropitting corrosion resistance test had a good correspondence.