| Ca3N2在生成BN反应中的作用 |
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| 引用本文： | 赵红梅, 徐晓伟, 刘志甫, 李玉萍. Ca3N2在生成BN反应中的作用[J]. 工程科学学报, 2001, 23(3): 234-236. DOI: 10.13374/j.issn1001-053x.2001.03.037 |
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| 作者姓名： | 赵红梅 徐晓伟 刘志甫 李玉萍 |
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| 作者单位： | 1.北京科技大学材料科学与工程学院, 北京 100083 |
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| 摘 要： | 研究了Ca3N2对高温常压下B4C与NH4CL生成hBN反应的作用.在950℃,B4C与NH4Cl的反应产物中含少量hBN,加入Ca3N2后hBN含量无明显变化;在1200℃,B4C与NH4Cl的反应产物中hBN含量高于950℃时的含量,加入Ca3N2后hBN含量明显增加.分析表明:Ca3N2在上述生成hBN的反应中表现出催化作用.Ca3N2对生成hBN反应的催化作用弱于Li3N,而且Ca3N2和Li3N都只有在熔融状态下才有催化作用.
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| 关 键 词： | 氨化钙 氮化硼 氮化锂 催化剂 |
| 收稿时间： | 2000-11-23 |
Function of Ca3N2 in the Formation of BN |
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| ZHAO Hongmei, XU Xiaowei, LIU Zhifu, LI Yuping. Function of Ca3N2 in the Formation of BN[J]. Chinese Journal of Engineering, 2001, 23(3): 234-236. DOI: 10.13374/j.issn1001-053x.2001.03.037 |
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| Authors: | ZHAO Hongmei XU Xiaowei LIU Zhifu LI Yuping |
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| Affiliation: | 1.Material Science and Engineering school, UST Beijing, Beijing 100083, China |
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| Abstract: | The function of Ca3N2 on the reaction between B4C and NH4Cl was investigated.Under normal pressure and high temperature. The results showed that there was small amount of hBN formed in the reaction at 950℃, and little change took place after Ca3N2 was added. The amount of hBN achieved from the reaction at 1200℃ was more than that at 950℃, and much more hBN was gained after adding Ca3N2. It was concluded that Ca3N2 performed catalytic function in the formation of hBN. In addition, the results also indicated that the catalytic function of Ca3N2 was less ho that of Li3N, and they could only act as catalyst at melting state. |
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| Keywords: | Ca3N2 BN Li3N catalyst |
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