Effects of CNTs content on microstructure and mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites

doi:10.1016/j.ceramint.2019.06.253

	Effects of CNTs content on microstructure and mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites
	Jia, Jiangang1 ; Liu, Diqiang 1,2; Zhang, Sheng 1; Zhang, Bo 1; Liu, Shunwei 1; Ji, Genshun1
	2019-11-01
发表期刊	Ceramics International
ISSN	02728842
卷号	45 期号:16 页码:19956-19961
摘要	In this work, CNTs and short carbon fiber reinforced α-Al2O3 matrix composites (i.e., Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3) were prepared by sol-gel dispersing method followed by hot pressing process. Effects of CNTs content on the mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites were investigated and the inter- and transgranular fracture mechanisms in Cnt-Csf/α-Al2O3 composites were analyzed. The hardness and relative density of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites slightly decrease as CNTs content increases. The flexural strength and fracture toughness monotonically increase with the increase in Cnt content for both Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites. Addition of Csf and CNTs into α-Al2O3 matrix results in a bimodal grain size microstructure of Cnt-Csf/α-Al2O3 composites, which accounts for the unique fractograph and the enhanced toughness of Cnt-Cf/α-Al2O3 composites. The flexural strength and fracture toughness of Csf5-nt06 composite are 465 MPa and 7.08 MPa/m2, 37% and 13% higher than that of Cnt06, and 42% and 34% higher than that of Csf5, respectively. © 2019 Elsevier Ltd and Techna Group S.r.l.
关键词	Alumina Aluminum oxide Bending strength Hot pressing Sol-gel process Sol-gels Textures Alpha-Al2O3 CNTs Hot-pressing process Matrix composite Microstructure and mechanical properties Relative density Short carbon fibers Transgranular fracture
DOI	10.1016/j.ceramint.2019.06.253
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000488148100043
出版者	Elsevier Ltd
EI入藏号	20193607401240
EI主题词	Fracture toughness
EI分类号	804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.3 Glass
来源库	Compendex
分类代码	804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.3 Glass
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114362
专题	材料科学与工程学院
通讯作者	Jia, Jiangang
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Shanxi, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Jia, Jiangang,Liu, Diqiang,Zhang, Sheng,et al. Effects of CNTs content on microstructure and mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites[J]. Ceramics International,2019,45(16):19956-19961.
APA	Jia, Jiangang,Liu, Diqiang,Zhang, Sheng,Zhang, Bo,Liu, Shunwei,&Ji, Genshun.(2019).Effects of CNTs content on microstructure and mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites.Ceramics International,45(16),19956-19961.
MLA	Jia, Jiangang,et al."Effects of CNTs content on microstructure and mechanical properties of Cnt/α-Al2O3 and Cnt-Csf/α-Al2O3 composites".Ceramics International 45.16(2019):19956-19961.