采用微米粉末和纳米粉末,分别在45钢表面等离子喷涂Al2O3-13％TiO2涂层,测定了涂层的显微硬度和孔隙率,分析了涂层的显微组织.结果表明；微米尺寸粉末制备的Al2O3-13％TiO2涂层具有明显的层状结构；纳米尺寸粉末制备的Al2O3-13％ TiO2涂层中有大量的未熔和半熔化粒子,粒子间结合紧密,涂层孔隙率小.
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