IMR OpenIR
Mechanical properties and failure behavior of hexagonal boron nitride sheets with nano-cracks
Li, Nan; Ding, Ning; Qu, Shen; Liu, Long; Guo, Weimin; Wu, Chi-Man Lawrence; Ding, N (reprint author), Qilu Univ Technol, Shandong Acad Sci, Key Lab Appl Technol Sophisticated Analyt Instrum, Jinan, Shandong, Peoples R China.; Wu, CML (reprint author), City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Hong Kong, Peoples R China.
2017-12-01
发表期刊ELSEVIER SCIENCE BV
ISSN0927-0256
卷号140页码:356-366
摘要Cracks in nano-scale are common defects in the 2D materials fabricated by a chemical vapor deposition method. Mechanical performance of 2D materials might be affected significantly due to the presence of nano-cracks. In this work, the mechanical performance and failure behavior of h-BN sheets with nano-cracks were studied using molecular dynamics methods. The relationship between the mechanical properties of h-BN sheets and the type or size of cracks was analyzed. The effect of temperature and strain rate on the mechanical behaviors of h-BN sheets was discussed. Results showed that when the crack size was larger than the threshold value, the Young's modulus of h-BN sheets decreased with the increase of the crack size linearly. The increasing crack size resulted in faster decrease of the Young's modulus of the zig-zag h-BN sheet than that of the armchair h-BN sheet. The fracture strength decreased rapidly with the increasing crack size first. Then, when the crack size reached a critical value, change of the fracture strength become minor. The mechanical properties of h-BN sheets with cracks were sensitive to the variation of temperature and strain rate. The information obtained in this work would be useful for estimating the mechanical performance and failure mechanism of h-BN sheets in future application. (C) 2017 Elsevier B.V. All rights reserved.; Cracks in nano-scale are common defects in the 2D materials fabricated by a chemical vapor deposition method. Mechanical performance of 2D materials might be affected significantly due to the presence of nano-cracks. In this work, the mechanical performance and failure behavior of h-BN sheets with nano-cracks were studied using molecular dynamics methods. The relationship between the mechanical properties of h-BN sheets and the type or size of cracks was analyzed. The effect of temperature and strain rate on the mechanical behaviors of h-BN sheets was discussed. Results showed that when the crack size was larger than the threshold value, the Young's modulus of h-BN sheets decreased with the increase of the crack size linearly. The increasing crack size resulted in faster decrease of the Young's modulus of the zig-zag h-BN sheet than that of the armchair h-BN sheet. The fracture strength decreased rapidly with the increasing crack size first. Then, when the crack size reached a critical value, change of the fracture strength become minor. The mechanical properties of h-BN sheets with cracks were sensitive to the variation of temperature and strain rate. The information obtained in this work would be useful for estimating the mechanical performance and failure mechanism of h-BN sheets in future application. (C) 2017 Elsevier B.V. All rights reserved.
部门归属[li, nan ; ding, ning ; liu, long ; guo, weimin ; wu, chi-man lawrence] qilu univ technol, shandong acad sci, key lab appl technol sophisticated analyt instrum, jinan, shandong, peoples r china ; [ding, ning ; wu, chi-man lawrence] city univ hong kong, dept mat sci & engn, hong kong, hong kong, peoples r china ; [qu, shen] chinese acad sci, inst met res, shenyang, liaoning, peoples r china
关键词Hexagonal Boron Nitride Nano-crack Mechanical Property Fracture Failure
学科领域Materials Science, Multidisciplinary
资助者National Natural Science Foundation of China [11404192, 11605106]; Shandong Province Special Grant for High-Level Overseas Talents [tshw20120745]; Research Award Fund for Outstanding Young and Middle-aged Scientists of Shandong Province, China [BS2014CL002]; Key Research and Development Project of Shandong Province, China [2015GSF120002]; Natural Science Foundation of Shandong province, China [ZR2014YL003]; Science and Technology Activities Foundation of China; Shandong Academy of Sciences [2015QN003, 2017QN001]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78963
专题中国科学院金属研究所
通讯作者Ding, N (reprint author), Qilu Univ Technol, Shandong Acad Sci, Key Lab Appl Technol Sophisticated Analyt Instrum, Jinan, Shandong, Peoples R China.; Wu, CML (reprint author), City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Hong Kong, Peoples R China.
推荐引用方式
GB/T 7714
Li, Nan,Ding, Ning,Qu, Shen,et al. Mechanical properties and failure behavior of hexagonal boron nitride sheets with nano-cracks[J]. ELSEVIER SCIENCE BV,2017,140:356-366.
APA Li, Nan.,Ding, Ning.,Qu, Shen.,Liu, Long.,Guo, Weimin.,...&Wu, CML .(2017).Mechanical properties and failure behavior of hexagonal boron nitride sheets with nano-cracks.ELSEVIER SCIENCE BV,140,356-366.
MLA Li, Nan,et al."Mechanical properties and failure behavior of hexagonal boron nitride sheets with nano-cracks".ELSEVIER SCIENCE BV 140(2017):356-366.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, Nan]的文章
[Ding, Ning]的文章
[Qu, Shen]的文章
百度学术
百度学术中相似的文章
[Li, Nan]的文章
[Ding, Ning]的文章
[Qu, Shen]的文章
必应学术
必应学术中相似的文章
[Li, Nan]的文章
[Ding, Ning]的文章
[Qu, Shen]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。