Fabrication of Ti2AlC by spark plasma sintering from elemental powders and thermodynamics analysis of Ti-Al-C system
Fabrication of Ti2AlC by spark plasma sintering from elemental powders and thermodynamics analysis of Ti-Al-C system
复制标题
单质粉末放电等离子烧结制备Ti2AlC及Ti-Al-C体系热力学分析
DOI：
10.1007/s11595-006-2325-x
复制
发表时间：
2007-06-01
影响因子：
1.6
通讯作者：
Zhou, Weibing
中科院分区：
文献类型：
--
作者：
Wang, Ping;Mei, Bingchu;Zhou, Weibing
以Ti、Al和活性炭的单质粉末混合物为原料，采用火花等离子烧结技术制备了Ti-2 AlC三元层状碳化物材料。采用XRD、SEM等方法对样品进行了物相鉴定和显微评价。实验结果表明，在1200℃下烧结时，产物中主相Ti2AlC完全结晶，粒径小，SPS的合成温度比热压（HP）或热等静压（HIP）的合成温度低200 ~ 400℃。通过热力学计算，通过计算反应的吉布斯自由能变化来研究Ti2AlC的反应机理。
A ternary-layered carbide Ti-2 AlC material could be synthesized by spark plasma sintering(SPS) technology using elemental powder mixture of Ti, Al and active carbon. By means of XRD and SEM, phases were identified and microscopically evaluated. The experimental results show that the main phase in the product was fully crystallized Ti2AlC with small particle size when sintered at 1200 degrees C. The synthesis temperature of SPS was 200-400 degrees C lower than that of hot pressing (HP) or hot isostatic pressing (HIP). Through thermodynamics calculations, the mechanism of Ti2AlC was studied by calculating changes of Gibbs free energy of reactions.