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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(英文),2017,46(10):3043~3047.[WANG Xiaoyi,WANG Yangwei,WANG Zaicheng,JIANG Chunlan and 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.]
Effect Study of Composition and Sintering Temperature on Reaction Heat of Fe-Al Reactive Material
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Received:June 18, 2015  Revised:September 01, 2015
DOI:
Key words: reactive materials  reaction heat  composition proportion  sintering temperature  intermetallic compounds
Foundation item:国防基础科研计划资助项目( A2220110003)
Author NameAffiliation
WANG Xiaoyi,WANG Yangwei,WANG Zaicheng,JIANG Chunlan and LI Qiang  
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Abstract:
      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.
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