Electron-irradiation-facilitated production of chemically homogenized nanotwins in nanolaminated carbides

doi:10.26599/JAC.2023.9220757

IMR OpenIR

	Electron-irradiation-facilitated production of chemically homogenized nanotwins in nanolaminated carbides
	Zhang, Hui 1,2; Jin, Qianqian 3; Hu, Tao 4; Liu, Xiaochun 5; Zhang, Zezhong 6; Hu, Chunfeng 7; Zhou, Yanchun 8; Han, Yu 9; Wang, Xiaohui 10
通讯作者	Zhang, Hui(hui.materials.zhang@gmail.com) ; Hu, Tao(thu@usts.edu.cn) ; Zhou, Yanchun(yczhou@alum.imr.ac.cn)
	2023-06-01
发表期刊	JOURNAL OF ADVANCED CERAMICS
ISSN	2226-4108
卷号	12 期号:6 页码:1288-1297
摘要	Twin boundaries have been exploited to stabilize ultrafine grains and improve mechanical properties of nanomaterials. The production of the twin boundaries and nanotwins is however prohibitively challenging in carbide ceramics. Using a scanning transmission electron microscope as a unique platform for atomic-scale structure engineering, we demonstrate that twin platelets could be produced in carbides by engineering antisite defects. The antisite defects at metal sites in various layered ternary carbides are collectively and controllably generated, and the metal elements are homogenized by electron irradiation, which transforms a twin-like lamellae into nanotwin platelets. Accompanying chemical homogenization, alpha-Ti3AlC2 transforms to unconventional beta-Ti3AlC2. The chemical homogeneity and the width of the twin platelets can be tuned by dose and energy of bombarding electrons. Chemically homogenized nanotwins can boost hardness by similar to 45%. Our results provide a new way to produce ultrathin (< 5 nm) nanotwin platelets in scientifically and technologically important carbide materials and showcase feasibility of defect engineering by an angstrom-sized electron probe.
关键词	electron-irradiation MAX phases carbides antisite defects crystal-structure engineering
DOI	10.26599/JAC.2023.9220757
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001004930200012
出版者	TSINGHUA UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178247
专题	中国科学院金属研究所
通讯作者	Zhang, Hui; Hu, Tao; Zhou, Yanchun
作者单位	1.South China Univ Technol, Electron Microscopy Ctr, Guangzhou 510640, Peoples R China 2.South China Univ Technol, Sch Emergent Soft Matter, Guangzhou 510640, Peoples R China 3.Guangxi Univ Sci & Technol, Sch Elect Engn, Ctr Struct Adv Matter, Liuzhou 545006, Peoples R China 4.Suzhou Univ Sci & Technol, Sch Mat Sci & Engn, Inst Mat Sci & Devices, Suzhou 215009, Peoples R China 5.Changsha Univ Sci & Technol, Inst Met, Changsha 410004, Peoples R China 6.Univ Antwerp, Electron Microscopy Mat Res EMAT, B-2020 Antwerp, Belgium 7.Southwest Jiaotong Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China 8.Zhengzhou Univ, Sch Mat Sci Engn, Zhengzhou 450001, Peoples R China 9.King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia 10.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hui,Jin, Qianqian,Hu, Tao,et al. Electron-irradiation-facilitated production of chemically homogenized nanotwins in nanolaminated carbides[J]. JOURNAL OF ADVANCED CERAMICS,2023,12(6):1288-1297.
APA	Zhang, Hui.,Jin, Qianqian.,Hu, Tao.,Liu, Xiaochun.,Zhang, Zezhong.,...&Wang, Xiaohui.(2023).Electron-irradiation-facilitated production of chemically homogenized nanotwins in nanolaminated carbides.JOURNAL OF ADVANCED CERAMICS,12(6),1288-1297.
MLA	Zhang, Hui,et al."Electron-irradiation-facilitated production of chemically homogenized nanotwins in nanolaminated carbides".JOURNAL OF ADVANCED CERAMICS 12.6(2023):1288-1297.