Tribological Properties and Lubricating Mechanism of Two Dicarboxylic Acid Ammonium Salts as Water- Soluble Lubricating Additives
两种水溶性二元羧酸盐润滑油添加剂的摩擦学性能及润滑机理研究

Two water-soluble lubricant additives,dodecenylsuccinic acid(DSA) ammonium salt and sulfurized dodecenylsuccinic acid(SDSA) ammonium salt were prepared from dodecenylsuccinic anhydride.Their tribological behaviors were examined by four-ball tester.The worn steel surfaces were investigated by scanning electron microscopy(SEM),and the chemistry of tribofilm and thermal film generated from SDSA ammonium salt was analyzed with X-ray absorption near-edge spectroscopy(XANES).The results show that the two compound...