Oxidation behavior of multi-component Ta-W-Al-Ti alloy at 1173 K

作     者：Jia-Xin Li Yu-Hong Chen Zhang-Jun Bai Bao-Jun Zhao Liang Jiang Lan-Er Wu Jia-Xin Li;Yu-Hong Chen;Zhang-Jun Bai;Bao-Jun Zhao;Liang Jiang;Lan-Er Wu

作者机构：School of Materials Science and EngineeringNorth Minzu UniversityYinchuan 750021China CNMC Ningxia Orient Group Co.LtdShizuishan 753000China School of Chemical EngineeringThe University of QueenslandBrisbaneQLD 4072Australia 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第7期

页      面：1940-1948页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(No.51464001) 

主　　题：Oxidation behavior Ta-W-based alloy Aluminum Titanium 

摘      要：Ta-W alloys have unique properties but their applications at high temperatures are restricted due to their poor oxidation *** addition of Al and Ti decreases the oxidation rate of the alloy,as Al-contained protective oxide layer could be *** this study,ternary and quaternary Ta-W alloys containing Al and Ti were prepared by hot press *** microstructures and oxidation behaviors of the alloys were studied at1173 *** results show that the oxidation kinetics of all alloys follows a parabolic law at short oxidation *** cyclic oxidation,the kinetics of quaternary alloys still obeys the parabolic law but that of ternary alloy has been changed into linear law kinetics after 8-h *** ternary alloy,an outer layer with dense and continuous alumina was formed during the initial stage,and phase transformation caused the oxides to peel *** comparison,the quaternary alloys depicted continuously solid solution of the oxides ***,Al and Ti played key roles in oxidation degree and affected the oxidation kinetics of ternary and quaternary alloys.