无机材料学报 ›› 2014, Vol. 29 ›› Issue (8): 864-868.DOI: 10.15541/jim20130584

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Ti3AlC2体材料的高温临氢行为研究

陈 辰1, 2, 张海斌2, 彭述明2, 赵林杰2, 朱建国1   

  1. (1. 四川大学 材料科学与工程学院, 成都 610065; 2. 中国工程物理研究院 核物理与化学研究所, 绵阳 621900)
  • 收稿日期:2013-11-12 修回日期:2014-01-18 出版日期:2014-08-20 网络出版日期:2014-07-15
  • 作者简介:陈 辰(1986-), 男, 硕士研究生. E-mail: 16111612@qq.com
  • 基金资助:
    国家自然科学基金(91326102);中国工程物理研究院科学技术发展基金(2012B0302035, 2013A0301012)

High Temperature Hydrogenation Behavior of Bulk Titanium Aluminum Carbide

CHEN Chen1, 2, ZHANG Hai-Bin2, PENG Shu-Min2, ZHAO Lin-Jie2, ZHU Jian-Guo1   

  1. (1. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China; 2. Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang 621900, China)
  • Received:2013-11-12 Revised:2014-01-18 Published:2014-08-20 Online:2014-07-15
  • About author:CHEN Chen. E-mail: 16111612@qq.com
  • Supported by:
    National Natural Science Foundation of China(91326102);Science and Technology Development Foundation of China Academy of Engineering Physics(2012B0302035, 2013A0301012)

摘要:

实验研究了Ti3AlC2体材料在700~1000℃氢气氛中的热稳定性。通过XRD、SEM、EDS、XPS和Raman分析手段对反应产物和材料形貌进行了表征, 通过热力学软件Factsage对气体产物进行了理论模拟。在700~1000℃氢气氛(低O压)条件下, 固态产物是Al2O3、TiO2和石墨, 气态产物是CH4, 未检测到氢化物的生成。SEM分析表明, 样品表面未生成明显的孔洞和裂缝。通过Ti3AlC2临氢前后的物相及形貌变化分析结果, 初步表明这种材料具有良好的抗氢性能, 可能的原因是反应产物中生成的氧化物对Ti3AlC2基体起到了保护作用。

关键词: Ti3AlC2, 氢气氛, 热稳定性, 抗氢性能

Abstract:

Ti3AlC2 is a new type of nano-layered machinable ceramic with numerous salient properties. Therefore, recently it is considered to be a promising candidate for new generation reactors as the key structural material. In this work, the reaction product and material morphology between nano-layered Ti3AlC2 and hydrogen were investigated by XRD, SEM, EDS, XPS and Raman. The resulted gaseous products were calculated by Factsage sofeware. Under the condition of 700-1000℃, hydrogen atmosphere (low oxygen pressure), solid products are Al2O3, TiO2 and C and gaseous product is CH4. Hydrides are not detected in the current experiments. The SEM results indicate that the reacted samples keep intact and cracks are not formed on the surface, indicating the high temperature thermal stability of Ti3AlC2 in hydrogen. These results can be attributed to the formation of oxides on the surface of specimens.

Key words: Ti3AlC2, hydrogen atmosphere, thermal stability, hydrogen resistance

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