@article{CHEN2023, 
author = {jiaxin CHEN and Qihang ZENG and Feng WANG and Pingʹan CHEN and Xiangcheng LI and Yingli ZHU and Boquan ZHU},
title = {Mechanical and Oxidation Resistance of SiC Based Composite Ceramics Reinforced with B4C},
year = {2023},
journal = {Journal of the Chinese Ceramic Society},
volume = {51},
number = {3},
pages = {730-737},
keywords = {silicon carbide-based composite ceramics, boron carbide, mechanical properties, oxidation resistance},
url = {https://www.sciopen.com/article/10.14062/j.issn.0454-5648.20220648},
doi = {10.14062/j.issn.0454-5648.20220648},
abstract = {The effects of B4C addition and heat treatment temperature on the microstructure, mechanical properties and oxide resistance of SiC-based composite ceramics were investigated. The results show that the addition of B4C can improve the crystallinity and graphitization of SiC. The linear change rate of SiC-based composite ceramics decreases from 1.39% to 0.58%. The flexural strength and compressive strength are increased by 1.8 times and 2 times (i.e., from 28.06 MPa to 50.25 MPa and from 48.03Pa to 98.58 MPa), respectively, after heat treatment at 1450℃ at B4C addition of 6% (in mass fraction). The oxidation index of SiC-based composite ceramics decreases from 30.33% to 18.35% after oxidation at 1400℃, and the thickness of the oxide layer decreases substantially from 3.52 mm to 0.23 mm with the increase of B4C addition from 0 to 6%. Therefore, adding B4C can enhance the amount of SiC whiskers and the strength and oxidation resistance of SiC-based composite ceramics as well.}
}