摘要
模拟４００４／３００３／４００４热轧复合工艺，对４００４合金在３５０～５２５℃分别加热保温所制备的试样表面氧化情况、氧化层厚度进行了宏观分析．用电子能谱仪（ＸＰＳ）对４００４合金４７５℃下各保温时间的试样表面氧化层进行Ａｒ＋逐层溅射剥离，对剥离面进行ＸＰＳ分析．对ＸＰＳ图谱进行了计算，结果表明：４００４合金在４７５℃×３ｈ试样表面已呈深灰色，氧化已较严重；在４７５℃恒温下，４００４合金保温１～２ｈ表面氧化层增厚遵循对数曲线变化；在２～６ｈ内，表面氧化层按一定比例增长，超过６ｈ后，表面氧化层增厚有所减缓．适当降低热轧复合时的加热温度，控制４００４铝合金表面氧化层的厚度，能提高复合成功率．
This paper macrographically analyzed the surface oxidization and the thichness of oxidized layer of 4004 alloy which successively undergo different temperature and different holding time during 350～525 ℃ according to the hot rolling bolding processes of 4004/3003/4004. Layer by layer, Ar + sputter etching and X ray photoelectronic spectrum (XPS) instrument analysis of the exposed surface of 4004 alloy which is heated at 475 ℃ and undergoes different holding time are carried out. According to the calculation of XPS, we obtained the law of dynamics of surface oxidization for 4004 alloy at a constant temperature, eg, 475 ℃, which has effec on the processes of hot rolling bonding. The results are as follows:at 475 ℃×3 h, the surface of 4004 alloy sample appears dark gray, indicating severe oxidation; holding time at 475 ℃. The surface oxidation layer thichness of 4004 alloy varies according to logrithm curve in the first two hours and increase proportionally in the next four hours, and after 6 hours, the oxidation layer thichness decreases partly. Properly decreasing the heating temperature of the rolling bonding and controlling the thickness of oxidation layer can improve the bonding efficiency.
出处
《中南工业大学学报》
CSCD
北大核心
1998年第5期479-482,共4页
Journal of Central South University of Technology(Natural Science)
基金
湖南省"八五"重点科技攻关资助
