Microstructural evolution and oxidation behavior of TiB2SiCB4C composite fabricated by reactive spark plasma sintering

作者: Chao Wu , Yunkai Li , Xingwang Cheng , Shihui Xie

DOI: 10.1016/J.JALLCOM.2018.06.219

关键词:

摘要: Abstract Microstructural evolution and oxidation behavior of TiB2 SiC B4C composite fabricated from Ti system with different weight ratios via reactive SPS were investigated in detail. Based on the characterizations SEM, XRD, TEM HRTEM, it was found that solid diffusion induces reactions between to form TiB2(TiB), C Ti(B,C,Si). Afterwards, results tests at 800 °C, 900 °C 1000 °C demonstrated sample highest contents performed best resistance due lowest porosity. Furthermore, smoothly glassy layer above substrate composed TiO2 B2O3 became thicker temperature increasing, meanwhile, vaporized recrystallized into plate-like, rose-like even large-monolithic grains.

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