北京理工大学 冲击环境材料技术重点实验室,北京理工大学 冲击环境材料技术重点实验室,北京理工大学爆炸科学与技术国家重点实验室,北京理工大学爆炸科学与技术国家重点实验室,北京理工大学爆炸科学与技术国家重点实验室
国防基础科研计划资助项目( A2220110003)
National key Laboratory of Scienece and Technology on Materials under Shock and Impact,Beijing Institute of Technology,National key Laboratory of Scienece and Technology on Materials under Shock and Impact,Beijing Institute of Technology,State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology
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以微米级Fe、Al粉末为原料，通过冷等静压制备了Fe:Al质量比分别为3:7、4:6、5:5的压坯，并利用差示扫描量热仪研究了不同成分配比对压坯反应热的影响，确定出具有最大反应热的压坯成分；采用无压烧结法将该配比压坯烧结成Fe-Al反应材料，并研究了烧结温度对该材料组织结构与反应热的影响。结果表明，质量比为Fe:Al=4:6的压坯具有最大的反应热，达到-589.8 J/g；该压坯在540℃烧结时，生成少量的金属间化合物Al13Fe4、Fe2Al5，使反应热降低，且不利于扩散反应的进一步进行；而在530℃烧结时，无明显金属间化合物生成，反应热略有下降，达到-538.5 J/g。
Micron Al, Fe powders were used as raw materials to prepare compacts, in which the quality ratio of Fe: Al were 3:7, 4:6 and 5:5 respectively by cold isostatic pressing. The effects of Fe-Al different composition proportion on reaction heat of compacts were studied by differential scanning calorimetry, in order to confirm the compact composition with maximum reaction heat. The Fe-Al reactive material with the above composition was prepared by pressureless sintering, and the influence of sintering temperature on the microstructure and reaction heat were investigated. Results show that, compact with the quality ratio of Fe: Al = 4:6 can release the maximum reaction heat: -589.8 J/g. When the sintering temperature was 540 ℃, a small amount of intermetallic compounds: Al13Fe4 and Fe2Al5 generated, which reduces the reaction heat, and is not conducive to the further spread of the reaction. However, when the sintering temperature was 530 ℃, no obvious intermetallic compound generated, resulting in the reaction heat decreasing slightly to -538.5 J/g.
引用本文
王肖义,王扬卫,王在成,姜春兰,李强.成分及烧结温度对Fe-Al反应材料反应热的影响[J].稀有金属材料与工程,2017,46(10):3043~3047.[WANG Xiaoyi, WANG Yangwei, WANG Zaicheng, JIANG Chunlan, LI Qiang. Effect Study of Composition and Sintering Temperature on Reaction Heat of Fe-Al Reactive Material[J]. Rare Metal Materials and Engineering,2017,46(10):3043~3047.]
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- 收稿日期:2015-06-18
- 最后修改日期:2015-09-01
- 录用日期:2015-10-13
- 在线发布日期: 2017-12-01