CC BY
19iSHS 2019
Moscow, Russia
FABRICATION OF TiC-TiB2 COMPOSITE CERAMIC BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS
K. Y. Liua, Y. Y. Lia, and P. W. Chen*a
aSchool of Mechatronical Engineering, Beijing Institute of Technology,
Beijing, 100081 China *e-mail: pwchen@bit.edu.cn
DOI: 10.24411/9999-0014A-2019-10085
TiC-TiB2 composite ceramic is a potential structural material and has attracted tremendous attention in recent years. It exhibits excellent properties, including high hardness, high temperature oxidation resistance, thermal shock resistance, corrosion stability and so on. TiC-TiB2 can be prepared by means of sintering process, hot isostatic pressing, and hot-pressed sintering. However, low production efficiency and high cost still exist for these conventional methods.
As a rapidly developed in-situ synthesis of materials technology, self-propagating high-temperature synthesis (SHS) has drawn much attention because of short reaction time, high production efficiency, and low cost.
In our study, TiC-TiB2 composite ceramic was fabricated by SHS reaction of pre-compacted titanium and boron carbide mixture powder. The specimens were densified by rapid compression at the same time. XRD was employed to identify the phase compositions of ceramic materials. The microstructure of TiC-TiB2 was observed by OM and SEM. The effects of synthesis conditions on the materials structure were investigated. The mechanical properties of TiC-TiB2 composite ceramic were characterized.
K. Y. Liu et al.
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