通过一系列试验,考察了采用不同烷烃乳液及极性添加剂作为磨削液时金刚石砂轮磨削S i3N4陶瓷时的堵塞效果。试验结果表明:由于烷烃油膜表面的非极性性质对非极性的S i3N4磨屑有很强的吸引力,采用烷烃乳液作为磨削液时,金刚石砂轮较易发生堵塞。通过在烷烃乳液中添加极性有机物,可以很大程度上缓解堵塞的发生,最佳的极性添加剂分子结构需要同时具备一定的憎水基团和亲水基团。 Through a series of experiments, the clogging effect of diamond grinding wheels on S i3N4 ceramics with different alkane emulsions and polar additives was investigated. The experimental results show that the non-polar nature of the paraffinic oil film is very attractive to non-polar S i3N4 wear debris. When the alkane emulsion is used as the grinding fluid, the diamond grinding wheel is more prone to blockage. By adding polar organic compounds to the alkane emulsion, the blockage can be greatly alleviated. The optimal polar additive molecular structure needs to possess both hydrophobic groups and hydrophilic groups.