【摘要】 以Al(NO3 ) 3 ·9H2 O为主要原料 ,采用非均匀成核技术在鳞片状石墨表面包覆一层Al2 O3 ,制备成石墨 /氧化铝复合粉体。对复合粉体的制备条件、表面形貌和特性进行了研究。研究表明 :pH值、处理温度和覆层物质前驱体浓度是影响包覆的主要因素。TEM观察和XPS能谱检测表明 ,石墨颗粒表面均匀包覆有一层Al2 O3 。包覆后石墨表面由疏水转为亲水更多还原

【Abstract】 Using Al（NO₃）₃·9H₂O as raw materials, graphite/Al₂O₃ composite powder was prepared by coating a layer of Al₂O₃ on the surface of scale-like graphite particles with heterogeneous nucleation technique. Preparing conditions, surface morphology and properties of the composite particle were investigated. The results indicate that pH value, temperature and concentration are the most important factors. TEM and XPS results show that a homogeneous layer of Al₂O₃ is coated on the surface of graphite particles. The surface property of graphite powder after coating changes from hydrophobic to hydrophilic.更多还原