2026-10-15T03:34:14Z https://www.scidb.cn/oai

10.57760/sciencedb.02264 2022-08-18T10:02:26Z

2022-08-18 Preparation of TiB2-SiC composites toughened with interlocking microstructure by self-assembled TiB2 plates doi:10.57760/sciencedb.02264 en The spark plasma sintering (SPS) technique was found to effectively improve the mechanical properties of TiB2-SiC ceramic by forming a unique interlocking structure. This study investigated the phase transition process of the hexagonal micro-platelets TiB2 powders with self-assembled structure during the molten-salt-mediated carbothermal reduction and its effect on promoting the mechanical properties of TiB2-based ceramics. It was found that the SPS approach ensured a highly densified TiB2-SiC ceramics with enhanced Vickers hardness of 21.0±1.3 GPa and fracture resistance of 7.8±0.3 MPa.m1/2. The performance enhancement of the resultant TiB2-SiC composite was attributed to the interlocking structure from the original anisotropic TiB2 powders, which could effectively absorb the energy and facilitate the crack deflection.  Ultra-high temperature ceramics; Self-assembled TiB2 plates; Interlocking structure; Fracture resistance. Shaolei Song Rong Li Qiang Zhen Zheng Li PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset http://www.doi.org/10.1016/j.ceramint.2021.11.050 Science Data Bank