Low-temperature reactive hot-pressing of Ta0.2Hf0.8C–SiC ceramics at 1700°C

doi:10.1111/jace.19090

	Low-temperature reactive hot-pressing of Ta0.2Hf0.8C–SiC ceramics at 1700°C
	Qin, Yanyan1,2,3 ; Ni, Dewei 1,2,6; Chen, Bowen 1,2; Lu, Jun 1,2,4; Cai, Feiyan 1,2,4; Zou, Xuegang 1,2,4; Gao, Le 1,2,4; Zhang, Xiangyu 1,2; Ding, Yusheng 1,2,5,6; Dong, Shaoming 1,2,6
	2023
发表期刊	JOURNAL OF THE AMERICAN CERAMIC SOCIETY (IF:3.5[JCR-2023],3.7[5-Year])
ISSN	0002-7820
EISSN	1551-2916
卷号	106 期号:7 页码:4390-4398
发表状态	已发表
DOI	10.1111/jace.19090
摘要	Temperature above 2000°C and additional pressure is generally required to achieve the full densification of TaxHf1−xC-based ceramics. This work proposed a novel method to fabricate dense Ta0.2Hf0.8C ceramics at relatively low temperature. Using a small amount of Si as a sintering aid, Ta0.2Hf0.8C was densified at 1700°C by reactive hot-pressing (RHP), with SiC formed in situ. Microstructure evolution mechanisms of the ceramics during RHP were investigated. The effect of silicon content on the densification and mechanical properties of the ceramics was revealed. It is indicated that the apparent porosity of the Ta0.2Hf0.8C–SiC ceramics was as low as 0.5%, whereas bending strength and fracture toughness of the ceramics were as high as ∼637 MPa and 6.7 MPa m1/2, respectively, when the silicon content was 8 wt.%. This work provides a new idea for the low-temperature densification of TaxHf1−xC and other ultrahigh temperature ceramics with high performance. © 2023 The American Ceramic Society.
关键词	Densification Ductile fracture Fracture toughness Hafnium compounds Hot pressing Silicon Silicon carbide Sintering Temperature C/SiC ceramic Full densification Low temperature densification Lows-temperatures Microstructure evolutions Novel methods Reactive hot pressing Silicon contents Sintering Aid Taxhf1−xC
URL	查看原文
收录类别	SCI ; EI
语种	英语
资助项目	Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC031] ; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing ; Wuhan University of Technology[2021-KF-5] ; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University[KF2116]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000953748100001
出版者	John Wiley and Sons Inc
EI入藏号	20231313808778
EI主题词	Bending strength
EI分类号	549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 641.1 Thermodynamics ; 802.3 Chemical Operations ; 804.2 Inorganic Compounds
原始文献类型	Article in Press
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/287906
专题	物质科学与技术学院物质科学与技术学院_硕士生
通讯作者	Ni, Dewei; Ding, Yusheng; Dong, Shaoming
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine M, Shanghai, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Struct Ceram & Composites Engn Res Ctr, Shanghai, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou, Peoples R China 6.Shanghai Inst Ceram, Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine M, Shanghai 200050, Peoples R China
第一作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Qin, Yanyan,Ni, Dewei,Chen, Bowen,et al. Low-temperature reactive hot-pressing of Ta0.2Hf0.8C–SiC ceramics at 1700°C[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2023,106(7):4390-4398.
APA	Qin, Yanyan.,Ni, Dewei.,Chen, Bowen.,Lu, Jun.,Cai, Feiyan.,...&Dong, Shaoming.(2023).Low-temperature reactive hot-pressing of Ta0.2Hf0.8C–SiC ceramics at 1700°C.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,106(7),4390-4398.
MLA	Qin, Yanyan,et al."Low-temperature reactive hot-pressing of Ta0.2Hf0.8C–SiC ceramics at 1700°C".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 106.7(2023):4390-4398.