陈枭.机械合金化制备Ti(Al,C)复合粉末组织结构研究[J].表面技术,2017,46(11):248-253.
CHEN Xiao.Microstructure of Ti(Al,C) Composite Powder Prepared by Mechanical Alloying[J].Surface Technology,2017,46(11):248-253 |
| 机械合金化制备Ti(Al,C)复合粉末组织结构研究 |
| Microstructure of Ti(Al,C) Composite Powder Prepared by Mechanical Alloying |
| 投稿时间：2017-07-22 修订日期：2017-11-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.11.034 |
| 中文关键词: 机械合金化 Ti(Al,C) 复合粉末 组织结构 固溶体 SEM |
| 英文关键词:mechanical alloying Ti(Al,C) composite particle microstructure solid solution SEM |
| 基金项目:九江市科技计划项目（[2015]64号） |
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| 中文摘要: |
| 目的 通过原位合成技术获得Ti(Al,C)复合粉末。方法 在不同球磨时间条件下，采用机械合金化方法制备Ti(Al,C)复合粉末，其中Ti粉和Al粉的摩尔比为1:1。采用扫描电子显微镜（SEM）以及X-射线衍射仪（XRD）分析球磨后粉末的显微组织结构及物相，研究不同球磨时间对制备Ti(Al,C)复合粉末物相演变、组织结构及粒子间界面结合状态的影响。结果 在球磨过程中，球磨时间越长，粉体的粒径越小，当球磨时间增长到一定程度时，延展性好的Al粉颗粒发生扁平化且其表面积不断增大，使得碎化后的Ti粉颗粒不断嵌入至Al粉颗粒中，最终形成Ti(Al)固溶体。同时根据XRD分析发现，随着球磨时间的延长，Ti(Al,C)复合粉末中的Al峰逐渐减小，说明Al不断固溶到Ti中，形成了一定量的Ti(Al)固溶体。结论 通过机械球磨技术在球磨一定时间后可原位合成Ti(Al)固溶体，这说明随着Ti与Al之间的相互扩散，有利于形成Ti(Al)固溶体。 |
| 英文摘要: |
| The work aims to prepare Ti(Al,C) composite powder in in-situ synthesis method. Ti(Al,C) composite powder was fabricated in mechanical alloying method for different ball milling time. Mole ratio of Ti/Al was 1:1. In order to study the effects of different ball milling time on phase evolution, microstructure and inter-particle interface bonding state of the composite power as-prepared, microstructure and phase of ball milled Ti(Al,C) composite powder were analyzed with scanning electron microscopy (SEM) and X-ray diffractometer (XRD), respectively. During the process of ball milling, grain size of the powder decreased as the milling time prolonged, and ductile Al powder particle flattened and its surface area enlarged as the ball milling time increased to a certain extent, and fractured Ti particles were continuously inserted into Al particles to constitute Ti(Al) solid solution. Al peak in the Ti(Al,C) composite powder gradually decreased, indicating that Al element continuously diffused into Ti to form certain amount of Ti(Al) solid solution. Ti(Al) solid solution can be successfully in-situ synthesized for certain period of time in ball milling method, it shows that interdiffusion between Ni and Al facilitates formation of Ti(Al) solid solution. |
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