| B4C与NH4Cl生成BN反应的研究 |
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| 引用本文： | 徐晓伟,刘志甫,赵会友,李玉萍.B4C与NH4Cl生成BN反应的研究[J].材料研究学报,2001,15(2):254-256. |
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| 作者姓名： | 徐晓伟 刘志甫 赵会友 李玉萍 |
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| 作者单位： | 1. 北京科技大学
2. 中国矿业大学 |
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| 基金项目： | 国家自然科学基金，59972003， |
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| 摘 要： | 研究了Ｂ４Ｃ，ＮＨ４Ｃl和Ｌi3N在不同条件下的反应，分析了Ｌi3Ｎ及Ｈ２，Ｎ２，ＮＨ３等气体在上述反应中的作用，结果表明，在Ｎ２气氛及１２２３Ｋ温度下，Ｂ４Ｃ与Ｌi3N反应生成hBN,B4C与ＮＨ４Ｃl反应只生成少量hBN,而Ｂ４Ｃ，ＮＨ４Ｃl，Li3N共同反应有大量hBN生成，说明在高温高压下合成cBN的常催化剂Li3N,在常压高温下Ｂ４Ｃ与ＮＨ４Ｃl生成hBN的反应中也起催化作用。
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| 关 键 词： | 碳化硼 氯化铵 氮化硼 催化剂 |
| 文章编号： | 1005-3093(2001)02-0254-03 |
| 修稿时间： | 2000年4月9日 |
RESEARCH ON SYNTHESIZING BN WITH B4C AND NH4Cl |
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| XU Xiaowei,LIU Zhifu,ZHAO huiyou,LI Yuping.RESEARCH ON SYNTHESIZING BN WITH B4C AND NH4Cl[J].Chinese Journal of Materials Research,2001,15(2):254-256. |
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| Authors: | XU Xiaowei LIU Zhifu ZHAO huiyou LI Yuping |
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| Abstract: | The reactions among B4C, NH4Cl and Li3N under different conditions has been studied. The X-ray diffraction (XRD) analysis of the products showed that no hBN was found in the reaction of B4C+Li3N at the temperature of 1223K and in N2, and little hBN was synthesized from the reaction of B4C+NH4Cl, but large amount hBN was synthesized from the reaction of B4C+NH4Cl+Li3N. The analysis of the functions of H2, N2, NH3 and Li3N has indicated that Li3N, a conventional catalyst of synthesizing cBN under high temperature and high pressure, also acts as catalyst in the synthesis of hBN by B4C+NH4Cl under high temperature and ambient pressure. |
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| Keywords: | B_4C NH_4Cl reaction BN |
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