The thermal stability of Ti2AlC and Ag/Ti2AlC in Ar and air

被引：2
|
作者：
Huang, Runzhang [1 ]
Xu, Guofu [1 ,3 ]
Zhao, Chengwei [1 ,2 ]
Wu, Qiong [1 ]
Yu, Lejian [1 ]
Wu, Chunping [1 ,3 ]
机构：
[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Zhejiang Songfa Composite New Mat Co LTD, Jiaxing 314200, Peoples R China
[3] Cent South Univ, Key Lab Nonferrous Mat Sci & Engn, Minist Educ, Changsha 410083, Hunan, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2024年 / 213卷
基金：
中国国家自然科学基金;
关键词：
Thermal stability; Oxidation behavior; EPMA; Ti2AlC; Ag/Ti2AlC; EROSION; COMPOSITES; BEHAVIOR; SCALES; CU;
D O I：
10.1016/j.matchar.2024.114050
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ag/Ti2AlC electrical contact material is a new type of environmentally friendly alternative material for Ag/CdO due to the good wettability and conductivity of Ti2AlC. However, the thermal stability and moderate oxidation sensitivity of Ti2AlC put restrictions on Ag/Ti2AlC materials manufacturing and application. Therefore, the thermal stability and oxidation behavior of Ti2AlC and Ag/Ti2AlC in air and Ar were analyzed by TG-DSC, XRD, SEM, EPMA and thermodynamic calculation. The practical periodic oxidation behavior of Ti2AlC and mixed Ag/ 10Ti2AlC powders at 300-900 degrees C in air and Ar atmosphere was studied. The negative effect of Ag diffusion into Ti2AlC particles on Ti2AlC' s thermal stability was demonstrated. In addition, the different behavior of Ti and Al atom during the sintering process of Ag/10Ti2AlC in air at different temperature were also discussed and combined with the periodic oxidation of Ti2AlC.
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页数：15
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