| 硼酸镁晶须的制备及生长机理初探 |
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| 引用本文： | 边绍菊,李洁,乃学瑛,李武.硼酸镁晶须的制备及生长机理初探[J].盐湖研究,2007,15(2):45-49. |
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| 作者姓名： | 边绍菊 李洁 乃学瑛 李武 |
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| 作者单位： | 1. 中科院青海盐湖研究所,青海,西宁,810008,中国科学院研究生院,北京,100049
2. 中科院青海盐湖研究所,青海,西宁,810008 |
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| 摘 要： | 以六水氯化镁、硼砂为反应物,氯化钾作助熔剂,通过高温助熔剂法在不同镁硼配比区域制备出尺寸和形貌不同的硼酸镁晶须,直径0.5～20μm,长30～500μm。镁硼摩尔比例1∶1～1∶4之间的对比实验结果为只在n(Mg):n(B)=1∶2～1∶4时,生成烧结块表层晶须;随着硼比例的增高,底部晶须的长径比增大。这表明高硼配比对硼酸镁晶须的完全生长至关重要;并推测硼酸镁晶须的生长机理可能为SLS机理。
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| 关 键 词： | 硼酸镁 晶须 制备 高硼配比 SLS机理 |
| 文章编号： | 1008-858X（2007）02-0045-05 |
| 修稿时间： | 2007-01-182007-04-05 |
Preparation of Mg2B2O5 Whisker and Preliminary Study on Its Growth Mechanism |
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| BIAN Shao-ju,LI Jie,NAI Xue-ying,LI Wu.Preparation of Mg2B2O5 Whisker and Preliminary Study on Its Growth Mechanism[J].Journal of Salt Lake Research,2007,15(2):45-49. |
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| Authors: | BIAN Shao-ju LI Jie NAI Xue-ying LI Wu |
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| Institution: | 1. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China ; 2. Graduate school of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Mg2B2O5 whiskers with different morphologies and sizes were prepared by flux method with magnesium chloride hexahydrate and borax as raw materials,potassium chloride as flux.The lengths of the whiskers are in the range 30～500 μm,and diamerers 0.5～20 μm.The experimental results showed that the sintered surface whiskers were formed when n(Mg)∶n(B)=1∶2,1∶4,and the L/D ratio of the whiskers at the bottom increased with the increase of boron proportion.It is obvious that high boron proportion plays an important role in complete growth of Mg2B2O5 whiskers.A possible growth mechanism of SLS for the Mg2B2O5 whiskers was proposed. |
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| Keywords: | Magnesium borate Whisker Preparation Higher boron proportion SLS mechanism |
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