Corrosion-wear behavior and synergy mechanism of Ti3AlC2-Al2O3/TiAl3 composite in molten aluminum

被引：0
|
作者：
Xiao H. [1 ]
Zhao S. [1 ]
机构：
[1] School of Mechanical Engineering, Guizhou University, Guiyang
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 10期
关键词：
Corrosion-wear; Molten Al; Synergy ratio; Ti[!sub]3[!/sub]AlC[!sub]2[!/sub]-Al[!sub]2[!/sub]O[!sub]3[!/sub]/TiAl[!sub]3[!/sub] composite;
D O I：
10.13801/j.cnki.fhclxb.20200111.003
中图分类号：
学科分类号：
摘要：
Through comparing and analyzing the materials loss characteristics under pure corrosion, pure wear and corrosion-wear conditions, the corrosion-wear behavior and synergy mechanism between corrosion and wear of Ti3AlC2-Al2O3/TiAl3 composite in molten aluminum were investigated. The results show that the loss of corrosion-wear of Ti3AlC2-Al2O3/TiAl3 composite is two orders of magnitude lower than that of H13 steel. With the increase of load and speed, the wear of Ti3AlC2-Al2O3/TiAl3 composite changes from abrasive wear to adhesive wear. The synergy ratio of corrosion-wear is less than 47.5% in the experiments. Under the condition of low load or low velocity, the Ti3AlC2-Al2O3/TiAl3 composite even exhibits negative synergy. This is partly due to no intermetallic compound formed in the interface, but just a little Ti dissolved into the molten aluminum when the Ti3AlC2-Al2O3/TiAl3 composite corroded in Al melt. On the other hand, the interpenetrating structure of TiAl3 matrix and Al2O3 reinforcement improves the wear resistance of Ti3AlC2-Al2O3/TiAl3 composite in molten aluminum. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：2501 / 2511
页数：10
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