| 自蔓延高温合成法制备MgSiN2粉体 |
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| 引用本文： | 彭桂花,冯玉芝,梁振华,李庆余,王红强,李文兰.自蔓延高温合成法制备MgSiN2粉体[J].桂林工学院学报,2009,29(4):497-501. |
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| 作者姓名： | 彭桂花 冯玉芝 梁振华 李庆余 王红强 李文兰 |
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| 作者单位： | 1. 广西师范大学,化学化工学院,广西,桂林,541004
2. 中国科学院,上海硅酸盐研究所,上海,200050 |
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| 基金项目： | 国家自然科学基金，广西科学研究与技术开发计划应用基础研究专项基金，高性能陶瓷和超微结构国家重点实验室开放基金 |
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| 摘 要： | 以自蔓延高温合成法制备了高纯MgSiN2粉体。通过绝热燃烧温度的理论计算，提出3种可能的反应体系——Mg粉／Si粉、Mg2Si粉或者Mg粉／Si3N4粉。对3种体系的研究结果表明：Mg粉／Si粉体系很难得到纯相的MgSiN2粉体，Mg2Si粉或者Mg粉／Si3N4粉燃烧可得纯MgSiN2粉体，其氧含量最低可达到0．377％，并具有良好的抗水化性能。
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| 关 键 词： | 自蔓延高温合成 MgSiN2 高热导 高硬度 |
Fabrication of MgSiN_2 Powders by SHS |
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| PENG Gui-hua,FENG Yu-zhi,LIANG Zhen-hua,LI Qing-yu,WANG Hong-qiang,LI Wen-lan.Fabrication of MgSiN_2 Powders by SHS[J].Journal of Guilin University of Technology,2009,29(4):497-501. |
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| Authors: | PENG Gui-hua FENG Yu-zhi LIANG Zhen-hua LI Qing-yu WANG Hong-qiang LI Wen-lan |
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| Affiliation: | PENG Gui-hua FENG Yu-zhi LIANG Zhen-hua LI Qing-yu WANG Hong-qiang LI Wen-lan ( 1. School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China ; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China) |
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| Abstract: | Fabrication of high-purity MgSiN_2 powders by self-propagating and high-temperature synthesis (SHS) is studied.According to the theoretic calculation of adiabatic combustion temperature,three kinds of possible reactants (Mg/Si,Mg_2Si,Mg/Si_3N_4) are involved and investigated.It is difficult to prepare pure MgSiN_2 powders from the mixtures of Mg and Si powders.Single-phase MgSiN_2 can be synthesized from Mg_2Si powders or the mixtures Mg and Si_3N_4 powders.The oxygen content of MgSiN_2 powders is as low as 0.377%,and the resistivity to hydration is good. |
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| Keywords: | MgSiN_2 self-propagating high-temperature synthesis(SHS) MgSiN_2 high thermal conductivity high hardness |
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