采用Ti粉、Sn粉和C粉为反应物原料，通过机械合金化和放电等离子（SPS）烧结进行Ti2SnC导电陶瓷的制备，探讨烧结温度对机械合金化产物和烧结块体的相组成及微观形貌的影响，同时对烧结块体的硬度、摩擦磨损性能进行分析。研究表明：温度为600~1000℃，块体的硬度和摩擦因数随着烧结温度的提升而逐渐降低；温度为1000℃；块体具有较低的硬度和较小的摩擦因数；温度超过1000℃，高温导致部分Ti2SnC开始分解，块体的硬度开始增加，摩擦磨损性能下降。
Ti2SnC conductive ceramics were prepared by mechanical alloying and spark plasma sintering using Ti,Sn and C as starting powders. The effect of sintering temperature on the phases,microstructure,hardness,friction and wear properties of sintered block was investigated. The results demonstrate that when the temperature is from 600℃to 1 000℃,with the increase of sintering temperature,hardness and friction coefficient are decreasing;The sintered block sintered at 1 000 ℃ has lowest hardness and smallest friction coefficient;Ti2SnC begins to decompose when the temperature is higher than 1 000℃,hardness begins to increase and friction coefficient decreases.
参考文献
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