Synthesis and Characterization of Ti/(TiB + TiC) Hybrid in-situ Composites by Spark Plasma Sintering
Synthesis and Characterization of Ti/(TiB + TiC) Hybrid in-situ Composites by Spark Plasma Sintering
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DOI：
10.1007/s12666-013-0266-6
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发表时间：
2013-06
影响因子：
1.6
通讯作者：
V. Balaji;S. Kumaran
中科院分区：
文献类型：
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作者：
V. Balaji;S. Kumaran
由于钛合金在高温下的耐磨性较差，机械强度损失较大，因此本文旨在制备原位Ti/（TiB + TiC）混杂复合材料。为了制备Ti/（TiB + TiC）原位复合材料，将B4 C颗粒与Ti粉混合，采用放电等离子烧结法在1400 °C下烧结不同时间。根据原位反应的完整性对烧结工艺参数进行了优化。烧结体的密度通过阿基米德原理测量。烧结样品的能量色散谱和光学显微镜观察表明，随着烧结时间的延长，TiB和TiC颗粒分别逐渐转变为针状结构和近等轴结构。
Since Ti alloys exhibit inferior wear resistance and suffer considerable loss in mechanical strength at high temperature, it is aimed at synthesis an in-situ Ti/(TiB + TiC) hybrid composite. In order to synthesis Ti/(TiB + TiC) in-situ composite, B4C particulate was mixed with titanium powder and sintered at 1400 °C at different time intervals by spark plasma sintering. Sintering parameters were optimized according to the complete in-situ reactions. Density of the sintered compacts was measured by Archimedes principle. Energy dispersive spectroscope and optical microscope observations of the sintered samples revealed that with increasing sintering time TiB and TiC particulates were gradually transforming into needle like structure and near equiaxed structure, respectively.