Preparation of ZrB2-ZrC-SiC-ZrO2 nanopowders with in-situ grown homogeneously dispersed SiC nanowires

Liu, Changqing; Zhang, Luyue; Yuan, Xiaoxiao; Liu, Hulin; Li, Chengxin; Hou, Xianghui

Abstract

To explore the application of SiC nanowires (SiCnws) in ZrB2 based ceramic materials, a facile approach is reported to in situ synthesize homogeneously dispersed SiCnws in ZrB2-ZrC-SiC-ZrO2 nanopowders by pyrolyzing a B-Si-Zr containing sol precursor impregnated in polyurethane sponge. The sponge was used to provide porous skeletons for the growth of SiC nanowires and facilitate their uniform distribution in the powders. After heat-treatment of the precursor with a Si/Zr atomic ratio of 10 at 1500 °C for 2 h, ZrB2-ZrC-SiC-ZrO2 ceramic powders were obtained with an even and fine particle size of ~100 nm. The SiCnws were in a diameter of ~100 nm with a controllable length varying from tens to hundreds of microns by increasing the silicon content in the precursor. Moreover, the produced SiCnws were in high purity, and homogeneously dispersed in the hybrid nanopowders. The study can open up a feasible route to overcome the critical fabrication process in SiCnws reinforced ceramic matrix composites.

Citation

Liu, C., Zhang, L., Yuan, X., Liu, H., Li, C., & Hou, X. (2020). Preparation of ZrB2-ZrC-SiC-ZrO2 nanopowders with in-situ grown homogeneously dispersed SiC nanowires. Materials and Design, 196, Article 109186. https://doi.org/10.1016/j.matdes.2020.109186

• Journal Article Type: Article
• Acceptance Date: Sep 23, 2020
• Online Publication Date: Sep 25, 2020
• Publication Date: Nov 1, 2020
• Deposit Date: Oct 3, 2020
• Publicly Available Date: Oct 5, 2020
• Journal: Materials & Design
• Print ISSN: 0264-1275
• Electronic ISSN: 0264-1275
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 196
• Article Number: 109186
• DOI: https://doi.org/10.1016/j.matdes.2020.109186
• Keywords: Mechanical Engineering; General Materials Science; Mechanics of Materials
• Public URL: https://nottingham-repository.worktribe.com/output/4928011
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0264127520307218