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成分及燒結(jié)溫度對Fe-Al反應(yīng)材料反應(yīng)熱的影響
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北京理工大學(xué) 沖擊環(huán)境材料技術(shù)重點(diǎn)實(shí)驗(yàn)室,北京理工大學(xué) 沖擊環(huán)境材料技術(shù)重點(diǎn)實(shí)驗(yàn)室,北京理工大學(xué)爆炸科學(xué)與技術(shù)國家重點(diǎn)實(shí)驗(yàn)室,北京理工大學(xué)爆炸科學(xué)與技術(shù)國家重點(diǎn)實(shí)驗(yàn)室,北京理工大學(xué)爆炸科學(xué)與技術(shù)國家重點(diǎn)實(shí)驗(yàn)室

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國防基礎(chǔ)科研計(jì)劃資助項(xiàng)目( A2220110003)


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

    以微米級Fe、Al粉末為原料，通過冷等靜壓制備了Fe:Al質(zhì)量比分別為3:7、4:6、5:5的壓坯，并利用差示掃描量熱儀研究了不同成分配比對壓坯反應(yīng)熱的影響，確定出具有最大反應(yīng)熱的壓坯成分；采用無壓燒結(jié)法將該配比壓坯燒結(jié)成Fe-Al反應(yīng)材料，并研究了燒結(jié)溫度對該材料組織結(jié)構(gòu)與反應(yīng)熱的影響。結(jié)果表明，質(zhì)量比為Fe:Al=4:6的壓坯具有最大的反應(yīng)熱，達(dá)到-589.8 J/g；該壓坯在540℃燒結(jié)時(shí)，生成少量的金屬間化合物Al13Fe4、Fe2Al5，使反應(yīng)熱降低，且不利于擴(kuò)散反應(yīng)的進(jìn)一步進(jìn)行；而在530℃燒結(jié)時(shí)，無明顯金屬間化合物生成，反應(yīng)熱略有下降，達(dá)到-538.5 J/g。

    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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王肖義,王揚(yáng)衛(wèi),王在成,姜春蘭,李強(qiáng).成分及燒結(jié)溫度對Fe-Al反應(yīng)材料反應(yīng)熱的影響[J].稀有金屬材料與工程,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
  • 錄用日期:2015-10-13
  • 在線發(fā)布日期: 2017-12-01
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