Synthesis of Nano-phase Composite Al-Sn Alloy by Reaction Ball Milling Process and Its Performance
SONG Kaiqiang1,2, ZENG Meiqin1,2, ZHU Min1,2, HU Renzong1,2, LU Zhongchen2,3
1 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640; 2 Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, Guangzhou 510640; 3 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640
摘要 利用反应球磨制备Al-SnO2-MgH2粉末,然后通过压制和烧结制备出高热稳纳米相复合结构Al-Sn合金。运用 X 射线衍射仪(XRD)和扫描电镜(SEM)等研究反应球磨制备的纳米相复合Al-Sn合金的组织和性能。结果表明:采用两步法和添加MgH2组元的方式所制备的机械合金化(MA)Al-SnO2-MgH2复合粉末,经压制和600 ℃烧结,合金中的SnO2几乎全部被还原成单质Sn,并呈现双尺度结构。其中,共生反应形成的纳米级Sn粒子和Al2O3颗粒均匀弥散地分布在Al基体中,显著提高了合金的硬度,从而使合金表现出低的摩擦系数和磨损量。
Abstract: Reaction ball milling process was used to prepare Al-SnO2-MgH2 alloy powders, then a high thermal stability nanocomposite Al-Sn alloy was obtained by a combination of cold pressing and sintering. The effect of reaction ball milling process on the microstructure and properties were investigated by XRD and SEM. The results show that the SnO2 in the MA Al-SnO2-MgH2 alloy powder, which was produced by a two steps method with the addition of MgH2, was almost deoxidized into monolithic Sn after sintering at 600 ℃. Meanwhile, the in situ formed Sn exhibits a typical dual-scale structure. In particular, the symbiotic formed Sn and Al2O3 were in nano-size and homogeneously distributed in the Al matrix, improving the hardness obviously and resulting in a significantly reduction of friction coefficient and wear volume.
宋凯强, 曾美琴, 朱敏, 胡仁宗, 鲁忠臣. 纳米相复合Al-Sn合金的反应球磨制备及性能研究*[J]. 《材料导报》期刊社, 2017, 31(12): 68-72.
SONG Kaiqiang, ZENG Meiqin, ZHU Min, HU Renzong, LU Zhongchen. Synthesis of Nano-phase Composite Al-Sn Alloy by Reaction Ball Milling Process and Its Performance. Materials Reports, 2017, 31(12): 68-72.
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2017, Vol. 31 
