The antiwear and friction-reducing performances of sodium borate,potassium borate and lanthanum chloride in water were evaluated on a four-ball friction tester.

• 结果表明,硼酸钠、硼酸钾和氯化镧可一定程度地提高水的极压、抗磨和减摩性能,硼酸钾性能最优,硼酸盐与氯化镧复合后性能进一步改善。