CHINESE JOURNAL OF ENERGETIC MATERIALS
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非平衡态Al/PTFE反应材料制备及其热性能
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作者单位:

(南京航空航天大学材料科学与技术学院, 江苏 南京 211106)

作者简介:

潘剑锋(1992-),男,硕士研究生,主要从事高性能复合材料研究。e-mail: jfpanblove@sina.com 通信联系人: 汪涛(1971-),男,教授、博士生导师,主要从事含能材料研究。e-mail: taowang@nuaa.edu.cn

通讯作者:

汪涛(1971-),男,教授、博士生导师,主要从事含能材料研究。e-mail: taowang@nuaa.edu.cn

基金项目:

中央高校基本科研业务项目(NP2012303); 江苏高校优势学科建设工程资助项目


Preparation and Thermal Properties of Non-equilibrium Al/PTFE Reactive Materials
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(College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)

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    摘要:

    用机械合金化方法制备了Al-Ni-Ti-Zr非平衡态合金粉末。将制备的Al基非平衡态合金粉末与聚四氟乙烯(PTFE)微米粉混合压制制备了非平衡态Al-Ni-Ti-Zr/PTFE反应材料。采用X射线衍射仪(XRD)和扫描电镜(SEM)表征了球磨过程中粉末的相组成和形貌特征。利用高分辨透射电子显微镜(HRTEM)和选区电子衍射(SAED)分析了球磨后合金粉末的相结构。利用差示扫描量热法(DSC)分析了非平衡态Al/PTFE反应材料的热行为。结果表明:通过机械合金化方法可以制备出Al基非平衡态合金粉末。存在弥散在Al基非晶基体中的纳米级微晶岛状区域。在升温速率10 K·min-1、空气气氛下, 非平衡态Al/ PTFE反应材料的反应峰值温度为495 ℃, 放热峰积面积为1775 J·g-1。连续升温条件下, 非平衡态Al/PTFE反应材料的放热反应具有典型的动力学特征, 通过Kissinger法计算的反应活化能Ec为309.1 kJ·mol-1

    Abstract:

    The Al-Ni-Ti-Zr non-equilibrium alloy powder was prepared by mechanical alloying method. The Al-Ni-Ti-Zr non-equilibrium alloy powder/polytetrafluoroethylene(PTFE) reactive materials were prepared via mixing/pressing using Al-based non-equilibrium alloy powders and PTFE micro powders. The phase composition and morphology characteristics of the powders during ball milling were characterized by X ray diffraction(XRD) and scanning electron microscopy(SEM). The phase structure of the milled alloy powders was analyzed by high resolution transmission electron microscopy(HRTEM) and selected area electron diffraction(SAED). The thermal behaviors of non-equilibrium Al/PTFE reactive materials were examined by differential scanning calorimetry(DSC). The results show that the Al-based non-equilibrium alloy powders can be prepared by mechanical alloying method. There is a nano scale micro-crystalline island area dispersed in amorphous phase matrix. The peak temperature and exothermic peak area of non-equilibrium Al/PTFE reactive materials at a heating rate of 10 K·min-1 in air are 495 ℃ and 1775 J·g-1, respectively. Under the continuous heating condition, the exothermic reaction of the non-equilibrium Al/PTFE reactive materials has the typical kinetic characteristics, and the activation energy Ec of the reaction is calculated as 309.1 kJ·mol-1 by Kissinger method.

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引用本文

潘剑锋,汪涛,鱼银虎,等.非平衡态Al/PTFE反应材料制备及其热性能[J].含能材料, 2016, 24(6):582-586. DOI:10.11943/j. issn.1006-9941.2016.06.012.
PAN Jian-feng, WANG Tao, YU Yin-hu, et al. Preparation and Thermal Properties of Non-equilibrium Al/PTFE Reactive Materials[J]. Chinese Journal of Energetic Materials, 2016, 24(6):582-586. DOI:10.11943/j. issn.1006-9941.2016.06.012.

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历史
  • 收稿日期: 2015-09-07
  • 最后修改日期: 2015-09-28
  • 录用日期: 2015-11-13
  • 在线发布日期: 2016-05-20
  • 出版日期: 2016-06-03