45钢表面原位摩擦化学反应膜形成过程及力学性能

材料热处理学报, 2011, 32(1): 87-91.

45钢表面原位摩擦化学反应膜形成过程及力学性能

张保森 ^1, , 许一 ^2, , 徐滨士 ^3, , 高飞 ^4, , 史佩京 ^5, , 吴毅雄 ^6,

1.上海交通大学上海市激光制造与材料改性重点实验室,上海,200240;装备再制造技术国防科技重点实验室,北京,100072

2.装备再制造技术国防科技重点实验室,北京,100072

3.装备再制造技术国防科技重点实验室,北京,100072

4.装备再制造技术国防科技重点实验室,北京,100072

5.装备再制造技术国防科技重点实验室,北京,100072

6.上海交通大学上海市激光制造与材料改性重点实验室,上海,200240

基金项目: 国家自然科学基金(50904072;50735006;50805146) 国家"973"项目(2007CB607601) 博士后基金(20090461452)

关键词：矿物粉体 , 蛇纹石 , 化学反应膜 , 力学性能

Formation and mechanical properties of in situ tribo-chemical reaction film on surface of 45 steel

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.

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