组元间化学相容、物理匹配对Al_2O_3基自润滑复相陶瓷磨擦学性能的影响

The Influence of Chemical Compatibility, Physical Match between Solid Lubricants and Matrix upon the Tribological Properties of Al_2O_3 - based Self-lubricating Materials

通过销盘对磨方式的摩擦磨损试验和ＳＥＭ、ＸＲＤ测试分析，研究了润滑组元（石墨、六方氮化硼）与氧化铝基体化学相容、物理匹配关系对基自润滑陶瓷材料摩擦性能的影响。结果表明，良好的化学相容是材料制备的前提，热膨胀系数等物理匹配不仅决定了材料的显微结构、力学性能，而且影响着摩擦过程中润滑组元的转移方式，进而影响到其润滑作用及耐磨性能。氮化硼因与基体具有较好的化学相容、物理匹配关系，以其为润滑组元的试样具有较好的摩擦磨损性能。

The influence of chemical compatibilities, physical matches between solid lubricants (graphite, boron nitride) and matrix(alumina)upon the tribological properties of ceramic self - lubricating materials have been investigated through SEM, XRD, friction and wear tests. The results showed that chemical compatibilities, physical matches played an important role affected the mechanical, tribological properties of the materials. Because boron nitride has suitable relationshipof chemical compatibilites, physical matches with alumina, therefore the samples containing boron nitride as lubricant has good friction and wear properties.