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以白云母和硝酸铈[Ce(NO3)3·6H2O]为反应物,草酸(H2C2O4·2H2O)为配体,采用机械力固相化学反应法制备纳米CeO2包覆白云母的复合粉体,利用白云母的层状结构,结合纳米CeO2独特的化学修复作用,以期改善机械装备用润滑油添加剂的减摩抗磨性能。结果表明:在高能球磨过程中白云母高度细化的同时伴随着前驱物草酸铈的生成与析出,在随后600℃下热分解在白云母表面形成纳米CeO2,形状为球形或类球形,纳米CeO2的含量及表面改性对白云母的部分键合有一定影响。
Ce (NO3) 3.6H2O] as the reactant and oxalic acid (H2C2O4.2H2O) as the ligand, the composite powder of nano-CeO2 coated muscovite was prepared by mechanical solid-phase chemical reaction method, Muscovite lamellar structure, combined with the unique nano-CeO2 chemical repair effect, with a view to improving the mechanical equipment lubricants additives anti-friction and anti-wear performance. The results show that during the high-energy ball milling, the muscovite is highly refined with the formation and precipitation of the precursor cerous oxalate, followed by thermal decomposition at 600 ℃ to form nano-CeO2 on the surface of muscovite with spherical or spheroidal shape, nano-CeO2 The content and surface modification of muscovite partially bonded to a certain extent.