Effect of sintering additives of carbon black, SiC, Al2O3, and Al2O3 + Y2O3 on microstructure and mechanical properties of B4C ceramics

doi:10.1007/s43207-024-00420-x

IMR OpenIR

	Effect of sintering additives of carbon black, SiC, Al₂O₃, and Al₂O₃ + Y₂O₃ on microstructure and mechanical properties of B₄C ceramics
	Zhang, Wei 1; Zhang, Jie 1,2
通讯作者	Zhang, Wei(cnzhangwei2008@126.com)
	2024-07-16
发表期刊	JOURNAL OF THE KOREAN CERAMIC SOCIETY
ISSN	1229-7801
页码	12
摘要	B4C ceramics are widely used as structural materials in the field of engineering. B4C ceramics are difficult to sinter; therefore, various sintering additives are added to B4C ceramics. The mechanisms of different sintering additives that promote the sintering of B4C ceramics are different. In this study, the effect of 3 wt % sintering additives of carbon black (CB), SiC, Al2O3, Al2O3 + Y2O3 on the phase compositions, microstructure, and mechanical properties of the hot-press sintered B4C ceramics with a certain degree of porosity are studied. When CB is selected as the sintering additive, there is no free carbon in the final B4C ceramics, which is attributed to its complete consumption with oxide film impurities existing on the B4C starting powders. The sintering additives of SiC and Al2O3 exist in the form of crystals, while Y3Al5O12 generated from the sintering additive of Al2O3 + Y2O3 exists in amorphous form in the final B4C ceramics. In the case of the same low additive amount, the sintering additives of Al2O3 and Y3Al5O12 are more conducive to promoting the sintering of B4C ceramics than the sintering additives of CB and SiC. The difference in the average gain sizes of the B4C ceramics with different types of sintering additives is not obvious. Different types of sintering additives determine the mechanical properties of the hot-press sintered B4C ceramics by affecting their porosity, grain size, and grain boundary characteristics.
关键词	B4C ceramics Sintering additive Mechanical properties Porosity Grain size Grain boundary
资助者	Natural Science Foundation of Liaoning Province of China ; Starting Grants of Institute of Metal Research, Chinese Academy of Science ; Shenyang National Laboratory for Materials Science
DOI	10.1007/s43207-024-00420-x
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Liaoning Province of China ; Starting Grants of Institute of Metal Research, Chinese Academy of Science[E255L401] ; Shenyang National Laboratory for Materials Science[E21SL412] ; [2022-MS-013]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001269214900002
出版者	SPRINGER HEIDELBERG
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188252
专题	中国科学院金属研究所
通讯作者	Zhang, Wei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,Zhang, Jie. Effect of sintering additives of carbon black, SiC, Al₂O₃, and Al₂O₃ + Y₂O₃ on microstructure and mechanical properties of B₄C ceramics[J]. JOURNAL OF THE KOREAN CERAMIC SOCIETY,2024:12.
APA	Zhang, Wei,&Zhang, Jie.(2024).Effect of sintering additives of carbon black, SiC, Al₂O₃, and Al₂O₃ + Y₂O₃ on microstructure and mechanical properties of B₄C ceramics.JOURNAL OF THE KOREAN CERAMIC SOCIETY,12.
MLA	Zhang, Wei,et al."Effect of sintering additives of carbon black, SiC, Al₂O₃, and Al₂O₃ + Y₂O₃ on microstructure and mechanical properties of B₄C ceramics".JOURNAL OF THE KOREAN CERAMIC SOCIETY (2024):12.