Hardness, elastic, and electronic properties of chromium monoboride
Abstract
Here, we report high-pressure synthesis of chromium monoboride (CrB) at 6 GPa and 1400 K. The elastic and plastic behaviors have been investigated by hydrostatic compression experiment and micro-indentation measurement. CrB is elastically incompressible with a high bulk modulus of 269.0 (5.9) GPa and exhibits a high Vickers hardness of 19.6 (0.7) GPa under the load of 1 kg force. Based on first principles calculations, the observed mechanical properties are attributed to the polar covalent Cr-B bonds interconnected with strong zigzag B-B covalent bonding network. The presence of metallic Cr bilayers is presumably responsible for the weakest paths in shear deformation.
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China); Jilin Univ., Changchun (China)
- Univ. of Nevada, Las Vegas, NV (United States)
- China Institute of Atomic Energy, Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China)
- Jilin Univ., Changchun (China)
- Beihang Univ., Beijing (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Nevada, Las Vegas, NV (United States)
- Publication Date:
- Research Org.:
- Univ. of Nevada, Las Vegas, NV (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1332354
- Grant/Contract Number:
- NA0001982
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 106; Journal Issue: 22; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; hardness; elastic moduli; boron; X-ray diffraction; bond formation
Citation Formats
Han, Lei, Wang, Shanmin, Zhu, Jinlong, Han, Songbai, Li, Wenmin, Chen, Bijuan, Wang, Xiancheng, Yu, Xiaohui, Liu, Baochang, Zhang, Ruifeng, Long, Youwen, Cheng, Jinguang, Zhang, Jianzhong, Zhao, Yusheng, and Jin, Changqing. Hardness, elastic, and electronic properties of chromium monoboride. United States: N. p., 2015.
Web. doi:10.1063/1.4922147.
Han, Lei, Wang, Shanmin, Zhu, Jinlong, Han, Songbai, Li, Wenmin, Chen, Bijuan, Wang, Xiancheng, Yu, Xiaohui, Liu, Baochang, Zhang, Ruifeng, Long, Youwen, Cheng, Jinguang, Zhang, Jianzhong, Zhao, Yusheng, & Jin, Changqing. Hardness, elastic, and electronic properties of chromium monoboride. United States. https://doi.org/10.1063/1.4922147
Han, Lei, Wang, Shanmin, Zhu, Jinlong, Han, Songbai, Li, Wenmin, Chen, Bijuan, Wang, Xiancheng, Yu, Xiaohui, Liu, Baochang, Zhang, Ruifeng, Long, Youwen, Cheng, Jinguang, Zhang, Jianzhong, Zhao, Yusheng, and Jin, Changqing. Wed .
"Hardness, elastic, and electronic properties of chromium monoboride". United States. https://doi.org/10.1063/1.4922147. https://www.osti.gov/servlets/purl/1332354.
@article{osti_1332354,
title = {Hardness, elastic, and electronic properties of chromium monoboride},
author = {Han, Lei and Wang, Shanmin and Zhu, Jinlong and Han, Songbai and Li, Wenmin and Chen, Bijuan and Wang, Xiancheng and Yu, Xiaohui and Liu, Baochang and Zhang, Ruifeng and Long, Youwen and Cheng, Jinguang and Zhang, Jianzhong and Zhao, Yusheng and Jin, Changqing},
abstractNote = {Here, we report high-pressure synthesis of chromium monoboride (CrB) at 6 GPa and 1400 K. The elastic and plastic behaviors have been investigated by hydrostatic compression experiment and micro-indentation measurement. CrB is elastically incompressible with a high bulk modulus of 269.0 (5.9) GPa and exhibits a high Vickers hardness of 19.6 (0.7) GPa under the load of 1 kg force. Based on first principles calculations, the observed mechanical properties are attributed to the polar covalent Cr-B bonds interconnected with strong zigzag B-B covalent bonding network. The presence of metallic Cr bilayers is presumably responsible for the weakest paths in shear deformation.},
doi = {10.1063/1.4922147},
journal = {Applied Physics Letters},
number = 22,
volume = 106,
place = {United States},
year = {Wed Jun 03 00:00:00 EDT 2015},
month = {Wed Jun 03 00:00:00 EDT 2015}
}
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