Effects of CNTs content on microstructure and mechanical properties of C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites
Jia, Jiangang1; Liu, Diqiang1,2; Zhang, Sheng1; Zhang, Bo1; Liu, Shunwei1; Ji, Genshun1
2019-11
发表期刊CERAMICS INTERNATIONAL
ISSN0272-8842
卷号45期号:16页码:19956-19961
摘要In this work, CNTs and short carbon fiber reinforced alpha-Al2O3 matrix composites (i.e., C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3) were prepared by sol-gel dispersing method followed by hot pressing process. Effects of CNTs content on the mechanical properties of C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites were investigated and the inter- and transgranular fracture mechanisms in C-nt-C-sf/alpha-Al2O3 composites were analyzed. The hardness and relative density of C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites slightly decrease as CNTs content increases. The flexural strength and fracture toughness monotonically increase with the increase in C-nt content for both C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites. Addition of C-sf and CNTs into alpha-Al2O3 matrix results in a bimodal grain size microstructure of C-nt-C-sf/alpha-Al2O3 composites, which accounts for the unique fractograph and the enhanced toughness of C-nt-C-sf/alpha-Al2O3 composites. The flexural strength and fracture toughness of C(sf)5-nt06 composite are 465 MPa and 7.08 MPa/m(2), 37% and 13% higher than that of C(nt)06, and 42% and 34% higher than that of C(sf)5, respectively.
关键词Alpha-Al2O3 Fracture toughness Flexural strength CNTs Short carbon fiber
DOI10.1016/j.ceramint.2019.06.253
收录类别SCI
语种英语
资助项目Gansu Province science and technology major projects[1602GKDD012]
WOS研究方向Materials Science
WOS类目Materials Science, Ceramics
WOS记录号WOS:000488148100043
出版者ELSEVIER SCI LTD
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/31489
专题材料科学与工程学院
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 C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-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 C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites.CERAMICS INTERNATIONAL,45(16),19956-19961.
MLA Jia, Jiangang,et al."Effects of CNTs content on microstructure and mechanical properties of C-nt/alpha-Al2O3 and C-nt-C-sf/alpha-Al2O3 composites".CERAMICS INTERNATIONAL 45.16(2019):19956-19961.
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