纳米SiO2在高压高温下的结构转化

纳米SiO₂在高压高温下的结构转化

张广强¹, 许大鹏¹, 王德涌¹, 张琳¹,², 宋更新¹, 薛燕峰¹, 孙敬姝¹, 刘晓梅¹, 苏文辉¹,³,⁴

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

收稿日期:2007-03-27 修回日期:1900-01-01 出版日期:2008-03-26 发布日期:2008-03-26
通讯作者: 许大鹏

Structural Transition of Nanometer SiO₂ Powders under High Pressure and High Temperature

ZHANG Guang qiang¹, XU Da peng¹, WANG De yong¹, ZHANG Lin¹,², SONG Geng xin¹, XUE Yan feng¹, SUN Jing shu¹, LIU Xiao mei¹, SU Wen hui¹,³,⁴

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

Received:2007-03-27 Revised:1900-01-01 Online:2008-03-26 Published:2008-03-26
Contact: XU Da peng

摘要/Abstract

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. 

关键词: 纳米SiO₂, α-石英, 柯石英, 高压高温, 晶化

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 SiO2 is much lower than that from common α-quartz. 

Key words: nanometer SiO₂, α-quartz, coesite, high pressure and high temperature, crystallize 

中图分类号:

O521

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]. J4, 2008, 46(02): 311-313.

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]. J4, 2008, 46(02): 311-313.

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纳米SiO₂在高压高温下的结构转化

Structural Transition of Nanometer SiO₂ Powders under High Pressure and High Temperature

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