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SEM micrographs of Bi4Ti3O12 powders: (a) produced by SHS; (b) produced by solid-state reaction.
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应用前景
❖SHS直接制备粉体 ❖SHS结合强化密实化技术 ❖SHS冶金和焊接 ❖气相传质SHS涂层
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改进方向
缺点：反应机理有待研究
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参考文献

❖ Chung et al, Advanced Materials 3 (2002) 129–135 ❖ SHS: Concepts of Current Research and Development,A. G.
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Nb5Si3/Nb
C.L.Yeh. Journal of Alloys and Compounds 402 (2005) 118–123
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成本低廉、时间短
两种制备方法的价格比在0.2~0.3之间！
自蔓延高温合成 (self propagation hightemperature synthesis,简称SHS)，又称为燃 烧合成 (combustion synthesis)技术，是利用 反应物之间高的化学反应热的自加热和自 传导作用来合成材料的一种技术，当反应 物一旦被引燃，便会自动向尚未反应的区 域传播，直至反应完全，能够用来制备无 机化合物高温材料。
合成设备
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Байду номын сангаас

SrFe12O19
Maxim. J . Ma t e r. , 1998 , 8 , 573
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LaBO3
Maxim. J . Ma t e r . C h e m . , 2 0 0 4,14,1377
SHS参数
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SHS合成B4Ti3O12
合成步骤
压实
装入
混粉 反应
点火
Macedo. Journal of the European Ceramic Society 24 (2004) 2567–2574
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Merzhanov, ed., Territoriya, Chernogolovka, 2003, p. 368(in Russian). ❖ A. G.Merzhanov and A. S. Rogachev, Russ. J. Phys. Chem., 2000,74(1), S20. ❖ M.Ode, Scripta Materialia 52 (2005) 1057–1062 ❖ Levashov，Advanced Materials 4 (2003) 221–228 ❖ Suzuki A, Wu F, Murakami H, Imai H. Advanced Materials 5 (2004) 555. ❖ W.H.Chen, Journal of Alloys and Compounds 402 (2005) 118– 123
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反应原理图
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Morzhanov J . Ma t e r . C h e m . , 2 0 0 4 , 1 4 , 1 7 7 9
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SHS所需时间为5min+2h 固相反应所需时间为10h！
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结果
SEM micrographs of Bi4Ti3O12 powders: (a) produced by SHS; (b) produced
by solid-state reaction.
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自蔓延高温合成方法 及其应用
报告人：张浩 组 员：袁恺阳
刘磊峰 曾一明

1 2 3
主要内容
SHS介绍 合成实例 应用前景
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直接合成法
❖Ti＋ 2B→ TiB2 ❖Ta ＋ C→ TaC ❖2B＋N2 →2BN
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Mg热、Al热合成法
3Mg＋Cr2O3＋B2O3 →2CrB＋3MgO＋G Al+Fe2O3+B2O3 →FeB+FeAl+Al2O3＋G