SiO_2 film was coated on the flake aluminum powder by sol-gel method to improve its acid resistance.

• 采用溶胶-凝胶法在片状铝粉表面包覆SiO_2薄膜,以改善其耐酸性能。 分析了正硅酸乙酯(TEOS)水解-缩聚反应在粒子表面包覆SiO_2膜的形成机理,并以此制备了SiO_2/Al复合粒子。