放电等离子烧结热处理合成Ti3SiC2粉体
Ti3SiC2 Powders Synthesized by SPS Heat Treatment Method
张志俊
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作者单位：长春工程学院 机电学院, 吉林 长春 130012
中文关键字：Ti3SiC2； 放电等离子烧结； 热处理
英文关键字：Ti3SiC2; spark plasma sintering (SPS); heat treatment
中文摘要：采用机械合金化合成TiC和Ti3SiC2混合粉体，用放电等离子烧结(SPS)系统对该粉体进行热处理，以合成高纯Ti3SiC2粉体。结果表明，采用SPS无压热处理可以促进机械合金化粉体在较低温度转变成高纯Ti3SiC2粉体材料。随热处理温度(700～1000 ℃)的升高，产物中Ti3SiC2的含量相应增加，当热处理温度为900～1000 ℃时，产物中Ti3SiC2纯度可达98wt%。
英文摘要：TiC and Ti3SiC2 mixed powders were synthesized by mechanical alloying. The mechanical alloying powders were heat treated by spark plasma sintering (SPS) for synthesizing high purity of Ti3SiC2 powders. The results show that pressureless SPS can enhance the rate of mechanical alloying powder transforming to high purity of Ti3SiC2 powders at low temperature. With the increase of heat treatment temperature, Ti3SiC2 content of the products increases. At the temperature of 900～1000 ℃, Ti3SiC2 content of the products reach 98wt%.