(1. 云南大学 材料科学与工程系， 昆明 650091;
2. 昆明理工大学 冶金系， 昆明 650093)
摘 要: 对用低价硫化铝的歧化反应进行钢基镀膜作了定性研究。 用两种蒸发源(2Al2O3+6C+Al2S3)和(4Al+Al2S3)分别进行反应蒸发镀膜，系统真空度为5Pa左右， 基材温度为1100℃。 研究结果表明： 以(2Al2O3+6C+Al2S3)为蒸发源的钢基镀膜层为α-Fe及Al13Fe4相， 对硝酸酒精溶液具有抗蚀性好的特点， 但其平整性稍差， 扩散层薄； 以(4Al+Al2S3)为蒸发源的镀膜层为Fe3Al及AlFe相， 其镀膜层表面光滑， 平整， 扩散层厚等特点。
关键字: 低价硫化铝； 铝； 镀膜
（WU Guo-yuan1, DAI Yong-nian2）
Abstract:The filming on steel using the disproportionation reaction of sub-sulphide of Al was studied. The chemical vaporization depositions were realized using(2Al2O3+6C+Al2S3) or (4Al+Al2S3) as reaction mixture at 1100℃ and the pressure of 5Pa. It is indicated that the coat formed by evaporation of (2Al2O3+6C+Al2S3) consists of α-Fe and Al13Fe4, possesses thin diffusion layer and dark rough surface, and is resistant to solution of nitric acid with alcohol; But the coat formed by evaporation of (4Al+Al2S3) consists of Fe3Al and AlFe, and possesses thick diffusion layer and bright smooth surface.
Key words: sub-sulphide; aluminum; film
