Synthesis and properties of MoAlB composites reinforced with SiC particles

被引：27

作者：

Zhang, Weiwei ^{[1
]}

Li, Shibo ^{[1
,2
]}

Wu, Shuang ^{[1
]}

Yao, Boxiang ^{[1
]}

Fan, Shukai ^{[3
]}

Bei, Guoping ^{[3
]}

Yu, Wenbo ^{[1
,2
]}

Zhou, Yang ^{[1
,2
]}

Wu, Ying ^{[4
]}

Ding, Sun-An ^{[4
]}

机构：

[1] Beijing Jiaotong Univ, Ctr Mat Sci & Engn, Sch Mech & Elect Control Engn, Beijing 100044, Peoples R China

[2] Beijing Jiaotong Univ, Res Ctr Rail Vehicles Safety Monitoring & Hlth Ma, Beijing 100044, Peoples R China

[3] China Porcelain Fuchi Suzhou High Tech Nano Mat C, Suzhou 215100, Peoples R China

[4] Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

来源：

JOURNAL OF ADVANCED CERAMICS | 2022年 / 11卷 / 03期

基金：

中国国家自然科学基金;

关键词：

SiC; MoAlB composite; mechanical properties; oxidation; microstructure; TEMPERATURE OXIDATION BEHAVIOR; MECHANICAL-PROPERTIES; ABLATION BEHAVIOR; MAB PHASES; MICROSTRUCTURE; RESISTANCE; CERAMICS; CR2ALB2; BORIDES;

D O I：

10.1007/s40145-021-0543-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel MoAlB composites reinforced with 5-15 vol% SiC have been firstly prepared and characterized in the present study. The SiC reinforcement is stable with MoAlB at a sintering temperature of 1200 degrees C in Ar. The 5 vol% SiC/MoAlB composite exhibited improved mechanical properties and enhanced oxidation resistance. A flexural strength of 380 MPa and a Vickers hardness of 12.7 GPa were achieved and increased by 24% and 51%, respectively, as compared with those for MoAlB, indicating the enhanced strengthening effect of SiC. Cyclic oxidation tests at 1200 and 1300 degrees C for 10 h in air showed that the 5 vol% SiC/MoAlB composite has better oxidation resistance than MoAlB due to the formation of a dense and continuous scale composed of Al2O3 and SiO2, which prevents the oxygen inward diffusion and the evaporation of oxides. We expect that the general strategy of second phase reinforcing for materials will help to widen the applications of MoAlB composites.

引用

页码：495 / 503

页数：9

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