【摘要】 采用放电等离子技术低温快速热爆合成TiAl金属间化合物粉末,利用X射线衍射对合成粉末进行物相鉴定,并研究了合成温度以及保温时间对TiAl化合物粉末合成的影响。结果表明,在1000℃下保温10min可以制备出纯度较高的γ-TiAl化合物粉末。同时,从热力学和动力学的角度分析了热爆合成TiAl化合物粉末的过程反应机理。更多还原

【Abstract】 Using spark plasma sintering technique TiAl intermetallic powers was prepared and XRD was used to identify the phases of products.The effects on the synthesis of TiAl intermetallic powers caused by temperature and holding time were investigated. The results showed that at 1?000?℃ for 10?min γ-TiAl powers with high purity was prepared.Meanwhile,the reaction mechanism of combustion synthesis of TiAl intermetallic was analyzed from the point of thermodynamics and dynamics.更多还原