Fabrication of Al<sub>3</sub>Ti Powder by Sintering Directly and its Reaction Mechanism

Zhou Liaoqi1; Zhang Xiaoyi1; Chen Yonghua1; Yan Qingyu1; Xie Xinyu1; Ding Yongheng1; L Chengye2

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Fabrication of Al₃Ti Powder by Sintering Directly and its Reaction Mechanism
Vol. 29, Issue 9, Pages: 861-863(2009)
Published： 2009 ，
DOI：

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[1]周辽奇,张孝义,陈永华,闫青宇,谢新宇,丁永恒,吕成业.直接烧结法制备Al_3Ti粉末及反应机理的研究[J].特种铸造及有色合金,2009,29(09):861-863+783.

Zhou Liaoqi1, Zhang Xiaoyi1, Chen Yonghua1, et al. Fabrication of Al₃Ti Powder by Sintering Directly and its Reaction Mechanism. [J]. Special Casting & Nonferrous Alloys 29(9):861-863(2009)
[1]周辽奇,张孝义,陈永华,闫青宇,谢新宇,丁永恒,吕成业.直接烧结法制备Al_3Ti粉末及反应机理的研究[J].特种铸造及有色合金,2009,29(09):861-863+783. DOI：

Zhou Liaoqi1, Zhang Xiaoyi1, Chen Yonghua1, et al. Fabrication of Al₃Ti Powder by Sintering Directly and its Reaction Mechanism. [J]. Special Casting & Nonferrous Alloys 29(9):861-863(2009) DOI：

摘要

以商业化的Ti、Al粉末为原料

研究了利用直接烧结法制备较纯的Al3Ti粉末的摩尔比和温度。结果表明

直接烧结法所需的Ti、Al摩尔比为1∶2.5

而理论摩尔比1∶3。由此可以断定

利用直接烧结反应合成Al3Ti颗粒时内部可能存在有"Ti核"。借助SEM观察及EDS分析表明

破碎后的Al3Ti相内部存在有Ti相。

Abstract

Taking commercial Ti and Al powders as reactants

Al3Ti powders were fabricated by sintering directly. Meanwhile

effects of Ti/Al molar ratio and sintering temperature on fabrication of pure Al3Ti powder were investigated. The results reveal that finer Al3Ti powder can be prepared with a higher Al/Ti molar ratio of 1∶2.5 by sintering directly compared with the theoretical value of 1∶3

so it is concluded that there exists Ti nucleus in Al3Ti powder prepared by sintering directly. The SEM observation and EDS analysis verify the presence of Ti nucleus in the Al3Ti particle.