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Yang C, Wu S, Wu S, Liu X, Zhao Z. In-situ characterization on crack propagation behavior of SiCf/SiC composites during monotonic tensile loading. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xu J, Guo L, Wang H, Li W, Liu N, Wang T. Influence of graphitization temperature on microstructure and mechanical property of C/C-SiC composites with highly textured pyrolytic carbon. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2021.12.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Wu Z, Wang H, Chen Z, Zhang R, Wen Q, He Z, Li M, Xiong X. Significant Improvement of Mechanical Properties of SiC-Nanowire-Reinforced SiCf/SiC Composites via Atomic Deposition of Ni Catalysts. MATERIALS 2022; 15:ma15082900. [PMID: 35454593 PMCID: PMC9030735 DOI: 10.3390/ma15082900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/08/2022] [Accepted: 04/13/2022] [Indexed: 02/04/2023]
Abstract
This study aimed to study the effects of different catalyst introduction methods on the distribution of SiC nanowires (SiCNWs) and the mechanical properties of SiCf/SiC composites. Two different catalyst-introduction methods (electroplating (EP) vs. atomic deposition (AD)) have been used to catalyze the growth of SiC nanowires in SiCf preforms. The morphology, structure and phase composition were systematically investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The SiCNWs-reinforced SiCf/SiC composited was densified by CVI. The compressive strength of the SiCNWs-reinforced SiCf/SiC composites was evaluated by radial crushing test. Compared with EP, atomic Ni catalysts fabricated by AD have higher diffusivity for better diffusion into the SiCf preform. The yield of SiCNWs is effectively increased in the internal pores of the SiCf preform, and a denser network forms. Therefore, the mechanical properties of SiCNW-containing SiCf/SiC composites are significantly improved. Compared with the EP-composites and SiCf/SiC composites, the compressive strength of AD-composites is increased by 51.1% and 56.0%, respectively. The results demonstrate that the use of AD method to grow SiCNWs is promising for enhancing the mechanical properties of SiCf/SiC composites.
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Affiliation(s)
- Zongxu Wu
- Science and Technology on High Strength Structural Materials Laboratory, Central South University, Changsha 410083, China; (Z.W.); (H.W.); (Q.W.)
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
| | - Haoran Wang
- Science and Technology on High Strength Structural Materials Laboratory, Central South University, Changsha 410083, China; (Z.W.); (H.W.); (Q.W.)
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
| | - Zhaoke Chen
- Science and Technology on High Strength Structural Materials Laboratory, Central South University, Changsha 410083, China; (Z.W.); (H.W.); (Q.W.)
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
- Correspondence:
| | - Ruiqian Zhang
- Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China; (R.Z.); (Z.H.); (M.L.)
| | - Qingbo Wen
- Science and Technology on High Strength Structural Materials Laboratory, Central South University, Changsha 410083, China; (Z.W.); (H.W.); (Q.W.)
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
| | - Zongbei He
- Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China; (R.Z.); (Z.H.); (M.L.)
| | - Ming Li
- Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China; (R.Z.); (Z.H.); (M.L.)
| | - Xiang Xiong
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
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