| 纳米SiO2在高压高温下的结构转化 |
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| 引用本文： | 张广强,许大鹏,王德涌,张琳,宋更新,薛燕峰,孙敬姝,刘晓梅,苏文辉.纳米SiO2在高压高温下的结构转化[J].吉林大学学报(理学版),2008,46(2):311-313. |
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| 作者姓名： | 张广强 许大鹏 王德涌 张琳 宋更新 薛燕峰 孙敬姝 刘晓梅 苏文辉 |
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| 作者单位： | 1. 吉林大学 物理学院, 长春 130021; 2. 黑龙江科技学院 数力系, 哈尔滨 150027; 3. 哈尔滨工业大学 凝聚态科学与技术研究中心, 哈尔滨150001; 4. 中国科学院 国际材料物理中心, 沈阳 110015 |
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| 摘 要： | 以纳米SiO2粉体为原料, 在高压高温下研究其晶化过程. XRD和Raman谱表明, 纳米SiO2在常压1 000~1 600 ℃条件下, 晶化成α-方石英和少量的鳞石英; 在2.0~3.5 GPa, 320~1 100 ℃条件下, 晶化成α-石英; 在3.9 GPa, 320~1 100 ℃条件下, 晶化成柯石英.
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| 关 键 词： | 纳米SiO2 α-石英 柯石英 高压高温 晶化 |
| 文章编号： | 1671-5489(2008)02-0311-03 |
| 收稿时间： | 2007-03-27 |
| 修稿时间： | 2007年3月27日 |
Structural Transition of Nanometer SiO2 Powders under High Pressure and High Temperature |
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| ZHANG Guang-qiang,XU Da-peng,WANG De-yong,ZHANG Lin,SONG Geng-xin,XUE Yan-feng,SUN Jing-shu,LIU Xiao-mei,SU Wen-hui.Structural Transition of Nanometer SiO2 Powders under High Pressure and High Temperature[J].Journal of Jilin University: Sci Ed,2008,46(2):311-313. |
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| Authors: | ZHANG Guang-qiang XU Da-peng WANG De-yong ZHANG Lin SONG Geng-xin XUE Yan-feng SUN Jing-shu LIU Xiao-mei SU Wen-hui |
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| Institution: | 1. College of Physics, Jilin University, Changchun 130021, China; 2. Department of Mathematics and Mechanics, Heilongjiang Institute of Science and Technology, Harbin 150027, China; 3. Center for the Condensed\|matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; 4. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China |
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| Abstract: | The crystallization process of nanometer SiO2 powder under high pressure and high temperature was investigated. The experiment results show that nanometer SiO2 powder crystallizes to α-cristobalite with a little tridymite under normal pressure at 1 000~1 600 ℃, crystallizes to α-quartz under 2.0~3.5 GPa and 320~1 100 ℃, and crystallizes to coesite under 3.9 GPa and 320~1 100 ℃. The temperature of coesite formation from nanometer SiO2 is much lower than that from common α-quartz. |
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| Keywords: | " target="_blank">2zz')" href="#"> nanometer SiO2 α-quartz coesite high pressure and high temperature crystallize |
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