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制备了一种用于原位摩擦化学处理技术的天然矿物微粉摩擦处理剂。采用环-块摩擦磨损试验机对其在柴油机油中的添加量进行了优化,研究了其在45钢表面的原位摩擦化学反应膜的形成过程及力学性能,探讨了形成机理。结果表明:处理剂含量为0.5 wt%时对45钢表面具有较好的优化效果,其摩擦因数和质量磨损率分别较基础油降低约19.7%和71.8%。摩擦处理表面较为光滑平整,形成了由铁的氧化物、铁镁硅酸盐及含碳化合物构成的摩擦化学反应膜,且随着时间的增加逐步由疏松多孔趋于致密连续,具有较高的力学性能,显著提高了45钢的表面强度及磨损抗力。
A natural mineral micro-powder friction treatment agent was prepared for the in-situ friction chemical treatment. The ring-block friction and wear tester was used to optimize the addition amount in Diesel engine oil. The formation process and mechanical properties of in situ friction chemical reaction film on 45 steel were studied, and the formation mechanism was discussed. The results show that when the content of the treating agent is 0.5 wt%, the surface of 45 steel is better than the base oil, and the friction coefficient and the mass loss rate are reduced by 19.7% and 71.8% respectively compared with the base oil. Friction treatment surface is smooth and smooth, forming a tribochemical reaction film composed of iron oxide, ferromagnesium silicate and carbon-containing compounds, and with the increase of time gradually from loose porous to dense continuous, with higher Mechanical properties, significantly increased the surface strength of 45 steel and wear resistance.