在醇 -水体系中采用同阴离子共沉淀法制备了季铵盐修饰的 (NH4 ) 3PMo12 O4 0 纳米微粒 ,采用TEM ,XRD ,FTIR ,TGA&DSC等多种分析手段表征了这种纳米微粒的形貌和结构 ,在四球试验机上考察了它们的摩擦学性能。结果表明所合成的杂多化合物具有Keggin骨架结构 ,微粒粒径约 2 0nm ,在有机溶剂中可良好分散 ,作为一类新型润滑油添加剂 ,具有良好的抗磨性能。 The quaternary ammonium salt modified (NH4) 3PMo12O40 nanoparticles were prepared by co-precipitation with anions in alcohol-water system. The morphology of the nanoparticles was characterized by TEM, XRD, FTIR, TGA and DSC And structure, their tribological properties were examined on a four-ball testing machine. The results show that the synthesized heteropoly compounds have a Keggin framework structure, the particle size of about 20nm, good dispersion in organic solvents, as a new type of lubricant additives, has good wear resistance.