| MoSi_2-WSi_2复合体系的自蔓延燃烧合成 |
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| 引用本文： | 寇开昌,杨延清,艾云龙,陈彦,康沫狂.MoSi_2-WSi_2复合体系的自蔓延燃烧合成[J].稀有金属材料与工程,2000(3). |
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| 作者姓名： | 寇开昌 杨延清 艾云龙 陈彦 康沫狂 |
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| 作者单位： | 西北工业大学材料科学与工程学院!西安710072 |
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| 摘 要： | 利用自蔓延燃烧合成法制备了 Mo Si2 - WSi2 复合粉体 ,并对合成产物进行了 X射线衍射分析。研究表明 ,通过自蔓延燃烧合成反应既可实现 Mo Si2 与 WSi2 的复合 ,又可通过调整反应物 Mo,W,Si的比例 ,在 Mo Si2 中引入 WSi2的同时还能引入足够量的 Mo5 Si3- W5 Si3相。W量的增加使体系的绝热温度降低 ,对自蔓延燃烧合成反应产生影响。研究还表明 Mo Si2 - WSi2 和 Mo5 Si3- W5 Si3均以固溶体的形式存在。
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| 关 键 词： | 自蔓延燃烧合成 MoSi_2-WSi_2 复合 绝热温度 Mo_5Si_3-W_5Si |
Self-Propagating High-Temperature Combustion Synthesis of MoSi_2-WSi_2 Composite |
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| Kou Kaichang,Yang Yanqing,Ai Yunlong,Chen Yan,Kang Mokuang.Self-Propagating High-Temperature Combustion Synthesis of MoSi_2-WSi_2 Composite[J].Rare Metal Materials and Engineering,2000(3). |
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| Authors: | Kou Kaichang Yang Yanqing Ai Yunlong Chen Yan Kang Mokuang |
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| Abstract: | MoSi 2 WSi 2 powders have been synthesized by means of self propagating high temperature combustion. It was found that not only MoSi 2 WSi 2 but also Mo 5Si 3 W 5Si 3 can be synthesized by this method when suitable ratios of Mo, W and Si powders were used. As the W content increases, the adiabatic temperature of reactive system decreases, which influences the synthesis process. It is also confirmed that MoSi 2 WSi 2 and Mo 5Si 3 W 5Si 3 exist as solid solutions of Mo (1-x) ,W x]Si 2 and Mo (1-y) ,W y] 5Si 3, respectively. |
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| Keywords: | self propagating high temperature combustion synthesis MoSi_2 WSi_2 composite adiabatic temperature Mo_5Si_3 W_5Si_3 |
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