| SiC粉体在硫酸铝-硫酸钠复合熔盐中的反应转化 |
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| 引用本文： | 赖坤容,王伟,关堂新,周维博.SiC粉体在硫酸铝-硫酸钠复合熔盐中的反应转化[J].四川大学学报(工程科学版),2012,44(4):197-200. |
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| 作者姓名： | 赖坤容 王伟 关堂新 周维博 |
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| 作者单位： | 1. 长安大学环境科学与工程学院,陕西西安,710054
2. 海军驻合肥地区军事代表室,安徽合肥,230031 |
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| 基金项目： | 中央高校基本科研业务费资助项目(CHD2011JC052);教育部国家外专局高等学校学科创新引智计划资助项目（“111”项目）（B08039） |
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| 摘 要： | 对碳化硅粉体在硫酸铝-硫酸钠复合熔盐反应转化成莫来石晶须的过程进行了研究。借助X射线粉末衍射仪(XRD)、红外光谱仪(IR)、高分辨透射电镜(TEM)、扫描电镜(SEM)和能谱仪(EDS),研究碳化硅与熔盐反应后的物相和微观形貌的变化。XRD和IR的结果表明,碳化硅在高温熔盐体系中可完全转化成莫来石晶须;SEM分析结果表明,莫来石沿111]晶面优先生长形成晶须。并提出了循环的氧化-溶解机理,对碳化硅陶瓷粉体在复合熔盐中的反应过程进行了解释。
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| 关 键 词： | 碳化硅 熔盐法 莫来石 晶须 |
| 收稿时间： | 1/11/2012 5:09:40 PM |
| 修稿时间： | 3/24/2012 9:29:30 PM |
Reaction of SiC Powders in Al2(SO4)3-Na2SO4 Mixture Molten Salts System |
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| Lai Kunrong,Wang Wei,Guan Tangxin and Zhou Weibo.Reaction of SiC Powders in Al2(SO4)3-Na2SO4 Mixture Molten Salts System[J].Journal of Sichuan University (Engineering Science Edition),2012,44(4):197-200. |
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| Authors: | Lai Kunrong Wang Wei Guan Tangxin and Zhou Weibo |
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| Affiliation: | 1(1.College of Environment and Eng.,Chang’an Univ.,Xi’an 710054,China;2.Navy Representatives in Hefei,Hefei 230031,China) |
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| Abstract: | The reactive process of silicon carbide in Al2(SO4)3-Na2SO4 molten salts system was studied. The surface morphology and phase transition were studied by X-ray diffraction (XRD), Infrared spectroscopy (IR), transmission electron microscope (TEM), scanning electronic microscope (SEM) and Energy Dispersive Spectrometer (EDS), respectively. XRD and IR results show that silicon carbide maybe completely transform into mullite whiskers, TEM result show the mullite crystals grew along 111] crystal plane firstly and developed into fibrous microstructure. A oxidation-dissolution mechanism was proposed for explanation the reaction of SiC powders in mixture molten salts. |
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| Keywords: | Research on the Reaction of SiC Powders in Al2(SO4)3-Na2SO4 Mixture Molten Salts System |
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