| Ice-templated porous tungsten and tungsten carbide inspired by natural wood | |
| Zhang, Yuan1,2; Tan, Guoqi1,3; Jiao, Da1; Zhang, Jian1; Wang, Shaogang1; Liu, Feng2; Liu, Zengqian1,3; Zhuo, Longchao4; Zhang, Zhefeng1,3; Deville, Sylvain5; Ritchie, Robert O.6 | |
| Corresponding Author | Liu, Zengqian(zengqianliu@imr.ac.cn) ; Zhuo, Longchao(zhuolongchao@xaut.edu.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) |
| 2020-05-15 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 45Pages:187-197 |
| Abstract | The structures of tungsten and tungsten carbide scaffolds play a key role in determining the properties of their infiltrated composites for multifunctional applications. However, it is challenging to construct and control the architectures by means of self-assembly in W/WC systems because of their large densities. Here we present the development of unidirectionally porous architectures, with high porosities exceeding 65 vol.%, for W and WC scaffolds which in many respects reproduce the design motif of natural wood using a direct ice-templating technique. This was achieved by adjusting the viscosities of suspensions to retard sedimentation during freezing. The processing, structural characteristics and mechanical properties of the resulting scaffolds were investigated with the correlations between them explored. Quantitative relationships were established to describe their strengths based on the mechanics of cellular solids by taking into account both inter- and intra-lamellar pores. The fracture mechanisms were also identified, especially in light of the porosity. This study extends the effectiveness of the ice-templating technique for systems with large densities or particle sizes. It further provides preforms for developing new nature-inspired multifunctional materials, as represented by W/WC-Cu composites. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Ice-templating Tungsten Scaffolds Fracture mechanisms Bioinspired materials |
| Funding Organization | National Natural Science Foundation of China ; Opening Project of Jiangsu Province Key Laboratory of High-end Structural Materials ; U.S. Air Force Office of Scientific Research, under MURI grant |
| DOI | 10.1016/j.jmst.2019.10.021 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51871216] ; National Natural Science Foundation of China[51501190] ; Opening Project of Jiangsu Province Key Laboratory of High-end Structural Materials[hsm1801] ; U.S. Air Force Office of Scientific Research, under MURI grant[AFSOR-FA9550-15-1-0009] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000526956200020 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138478 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Zengqian; Zhuo, Longchao; Zhang, Zhefeng |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China 2.Liaoning Shihua Univ, Sch Mech Engn, Fushun 113001, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 4.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China 5.CNRS, St Gobain Res Provence, Lab Synthese & Fonctionnalisat Ceram, UMR3080,St Gobain CREE, F-84306 Cavaillon, France 6.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA |
| Recommended Citation GB/T 7714 | Zhang, Yuan,Tan, Guoqi,Jiao, Da,et al. Ice-templated porous tungsten and tungsten carbide inspired by natural wood[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,45:187-197. |
| APA | Zhang, Yuan.,Tan, Guoqi.,Jiao, Da.,Zhang, Jian.,Wang, Shaogang.,...&Ritchie, Robert O..(2020).Ice-templated porous tungsten and tungsten carbide inspired by natural wood.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,45,187-197. |
| MLA | Zhang, Yuan,et al."Ice-templated porous tungsten and tungsten carbide inspired by natural wood".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 45(2020):187-197. |
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