尼龙66粉末与纳米Fe3O4粒子作润滑油添加剂的摩擦学匹配性研究

利用化学共沉淀法制备了油酸修饰的粒径大小为8nm左右的Fe3O4纳米粒子，并将其与尼龙66粉末混合作润滑油添加剂进行摩擦学试验。试验结果表明在添加纳米Fe3O4粒子的润滑油中再添加适量的尼龙66粉未，润滑油的摩擦学性能得到改善，在保持润滑油润滑性能不变的情况下，磨损量明显降低。可见，纳米Fe3O4粒子与尼龙66粉末表现出了良好的摩擦学协同性能。

Study on the Tribological Properties of Complex Additive of Oleic Acid-Modified Fe3O4 Nano-particle and PA66 Powder

Fe 3O 4 nanoparticles of average diameter 8nm,which were surface-modified with oleic acid,were prepared by chemical co-deposition method,and the tribological properties of the prepared nanoparticles and PA66 powder as additive in 32 # machine oil were investigated on M-200 tribotest.Results indicate the oils adding oleic acid-modified Fe 3O 4 nanoparticles and PA66 powder exhibit good tribological properties.Under the condition of keeping friction coefficient basically changeless,and wear-scar width reduced 28% maximally.So the synergistic effect of nano-Fe 3O 4 particles and PA66 powder as lubricating additive was found.