Oxidation resistance of Cr-modified MoSi2 composites at high temperature

被引：5

作者：

Li, Niannian ^{[1
,2
]}

Gao, Jun ^{[1
]}

Wang, Wanxia ^{[1
]}

Chen, Sheng-Chi ^{[3
,4
]}

Wang, Kunlun ^{[2
]}

Wang, Yong ^{[2
]}

Wen, Chao-Kuang ^{[3
,4
]}

Sun, Hui ^{[2
]}

机构：

[1] Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Shandong, Peoples R China

[2] Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China

[3] Ming Chi Univ Technol, Dept Mat Engn, New Taipei City 243, Taiwan

[4] Ming Chi Univ Technol, Ctr Plasma & Thin Film Technol, New Taipei City 243, Taiwan

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2024年 / 119卷

基金：

中国国家自然科学基金;

关键词：

MoSi2; Cr-modified; Oxidation behavior; Hot pressed sintering; MECHANICAL-PROPERTIES; INTERMETALLIC ALLOY; BEHAVIOR; MICROSTRUCTURE; AL; KINETICS; NB; STABILITY; CERAMICS; CHROMIUM;

D O I：

10.1016/j.ijrmhm.2023.106497

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alloying is an important measure to improve the oxidation resistance of MoSi2. Cr-modified MoSi2 composites were prepared by hot pressing sintering in this study, and their oxidation behaviors at different temperatures were examined by XRD, SEM and EDS. The results show that the MoSi2 matrix forms CrSi2 compound with the increase of Cr content, which is conductive to the formation of surface oxide scale. Besides, the microstructure study shows that the modified element Cr promotes the formation of SiO2 protective scale at 500 degrees C-900 degrees C. When oxidized at 1300 degrees C, Cr2O3 in the form of Cr oxidation dissolved in MoSi2 is dispersed in the SiO2 oxide scale. The high temperature oxidation resistance of MoSi2 composites is improved by adding Cr modified element.

引用

页数：10

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