Abstract
Weak interphases play a pivotal role by acting as mechanical fuse to deflect matrix cracks in future ultrahigh‐temperature ceramic fiber reinforced ceramic matrix (UHTCf/UHTC) composites. However, the interphase materials are not available yet. In this work, the electronic structure, chemical bonding, and mechanical properties of NiB, which is a promising interphase material for UHTCf/UHTC composites, were investigated. NiB has relatively low shear modulus of 116 GPa, moderate Young's modulus of 307 GPa, but high bulk modulus of 287 GPa. The Pugh's ratio G/B is only 0.404 and the micro hardness is predicted to be 8.2 GPa, indicating that NiB belongs to “soft” and “ductile” UHTCs. The possible slip systems are [100](001), [010](001), and [001](010) due to the presence of metallic Ni–Ni and weak Ni–B bonding. Details on the electronic structure and directional dependence of shear and Young's moduli are disclosed to highlight the mechanisms that underpin the properties.
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Dates
Type | When |
---|---|
Created | 9 years, 5 months ago (March 8, 2016, 4:14 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 16, 2023, 4:46 p.m.) |
Indexed | 4 weeks ago (Aug. 2, 2025, 12:11 a.m.) |
Issued | 9 years, 5 months ago (March 8, 2016) |
Published | 9 years, 5 months ago (March 8, 2016) |
Published Online | 9 years, 5 months ago (March 8, 2016) |
Published Print | 9 years, 2 months ago (June 1, 2016) |
Funders
1
National Natural Science Foundation of China
10.13039/501100001809
Region: Asia
gov (National government)
Labels
11
- Chinese National Science Foundation
- Natural Science Foundation of China
- National Science Foundation of China
- NNSF of China
- NSF of China
- 国家自然科学基金委员会
- National Nature Science Foundation of China
- Guójiā Zìrán Kēxué Jījīn Wěiyuánhuì
- NSFC
- NNSF
- NNSFC
Awards
1
- U1435206
@article{Zhou_2016, title={Electronic Structure and Mechanical Properties of NiB: A Promising Interphase Material for Future UHTCf/UHTC Composites}, volume={99}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/jace.14195}, DOI={10.1111/jace.14195}, number={6}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Zhou, Yanchun and Xiang, Huimin and Feng, Zhihai and Li, Zhongping}, editor={Pharr, G.}, year={2016}, month=mar, pages={2110–2119} }