| 以Mg合成Mg3B2N4的研究 |
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| 引用本文： | 徐晓伟 李玉萍. 以Mg合成Mg3B2N4的研究[J]. 硅酸盐学报, 1995, 23(6): 697-699 |
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| 作者姓名： | 徐晓伟 李玉萍 |
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| 作者单位： | 北京科技大学理化系 |
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| 摘 要： | 高温下，Ｍｇ可以夺得ｈ－ＢＮ中Ｂ原子生成ＭｇＢ２；在有氮气存在条件下，Ｍｇ更容易与ｈ－ＢＮ和Ｎ原子反应生成Ｍｇ３Ｂ２Ｎ４。生成Ｍｇ３Ｂ２Ｎ４的反应是由ｈ－ＢＮ晶粒表面向中心逐步进行的，生成的ＭｇＢ２Ｎ４阻碍了Ｍｇ３Ｂ２Ｂ４阻碍了Ｍｇ与ｈ－ＢＮ的接触，因此ｈ－ＢＮ难以全部参与反应。
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| 关 键 词： | 催化剂 六方氮化硼 镁 氮化硼 |
THE PREPARATION OF Mg_3B_2N_4 USING MAGNESIUM |
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| Xu Xiaowei Physics and Chemistry Department,University of Science and Technology of Beijing,Beijing .,Li Yuping,Liu Qingguo. THE PREPARATION OF Mg_3B_2N_4 USING MAGNESIUM[J]. Journal of The Chinese Ceramic Society, 1995, 23(6): 697-699 |
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| Authors: | Xu Xiaowei Physics Chemistry Department University of Science Technology of Beijing Beijing . Li Yuping Liu Qingguo |
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| Affiliation: | Xu Xiaowei Physics and Chemistry Department,University of Science and Technology of Beijing,Beijing 100083.,Li Yuping,Liu Qingguo |
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| Abstract: | Mg can get B from hexagonal BN and the MgB_2 is prepared at high temperature,but theMg_3B_2N_4 is much more easily prepared if N2 exists in the reaction cell.The growth process of Mg_3B_2N_4 is car-ried out from the surface to the inside of hexagonal BN crystals successively,which hinders the further reaction of Mg with hexagonaI BN,so it is difficuIt that the hexagonal BN takes part in the reaction wholly. |
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| Keywords: | catalyst hexagonal boron nitride magnesium |
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