Effect Study of Composition and Sintering Temperature on Reaction Heat of Fe-Al Reactive Material

Home > Archive>Volume 46, Issue 10, 2017 >3043-3047

Effect Study of Composition and Sintering Temperature on Reaction Heat of Fe-Al Reactive Material
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                        WANG XiaoyiWANG Xiaoyi
National key Laboratory of Scienece and Technology on Materials under Shock and Impact,Beijing Institute of Technology
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WANG YangweiWANG Yangwei
National key Laboratory of Scienece and Technology on Materials under Shock and Impact,Beijing Institute of Technology
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WANG ZaichengWANG Zaicheng
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology
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JIANG ChunlanJIANG Chunlan
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology
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LI QiangLI Qiang
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology
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Affiliation: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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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.

Key words:reactive materials; reaction heat; composition proportion; sintering temperature; intermetallic compounds

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[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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Received:June 18,2015
Revised:September 01,2015
Adopted:October 13,2015
Online: December 01,2017
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