×
近期发现有不法分子冒充我刊与作者联系,借此进行欺诈等不法行为,请广大作者加以鉴别,如遇诈骗行为,请第一时间与我刊编辑部联系确认(《中国物理C》(英文)编辑部电话:010-88235947,010-88236950),并作报警处理。
本刊再次郑重声明:
(1)本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137
(2)本刊采编系统作者中心是投稿的唯一路径,该系统为ScholarOne远程稿件采编系统,仅在本刊投稿网网址(https://mc03.manuscriptcentral.com/cpc)设有登录入口。本刊不接受其他方式的投稿,如打印稿投稿、E-mail信箱投稿等,若以此种方式接收投稿均为假冒。
(3)所有投稿均需经过严格的同行评议、编辑加工后方可发表,本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿,并收取发表费用,均为假冒。
                  
《中国物理C》(英文)编辑部
2024年10月30日

Transformations of Amorphous Silica under High Pressure and High Temperature

  • Aimed at the transformation methods and mechanism of amorphous silica on the conditions of high pressure and high temperature, we used the Changbaishan diatomite, which had been heating treated at 700°C, as the sample of amorphous silica, to carried out the in situ high pressure and high temperature synchrotron X-ray diffraction determinations (EDXD method) in the range of pressure of 0—4GPa and temperature of 1000—1300K by the diamond anvil cell apparatus and double-sided laser heating technique. The experimental results indicate that amorphous silica transform to α-quartz, but not β-quartz and cristobalite in the range of pressure of 0.8—2.4GPa and temperature of 1000—1300K. The crystalline temperature of amorphous silica under high pressure is much lower than that of ambient condition.The resluts means that the pressure is favored to low the activation energy of amorphous transform to crystalline phases,and would change the metastable phase transformation mechanism,leading to the different crystalline phases. In the range of pressure of 3—4GPa and temperature at 1300K, both amorphous silica and quartz transform to coesite.
  • 加载中
  • [1] . Wright A C. J. Non-cryst. Solids, 1994, 179: 84—1152. KeenD A, Dove M T. J Phys: Condensed Matter, 1999,11: 9263—92733. Sigaev V N, Smelyanskaya E N, Plotnichenko V G et al. J.Non-cryst. Solids, 1999, 248: 141—1464. XIAO Wan-Sheng, PENG Wen-Shi, WANG Guan-Xin etal. Spectroscopy and Spectral Analysis, 2004, 24: 690—693(in Chinese)(肖万生,彭文世,王冠鑫等.光谱学与光谱分析,2004. 24:690-693)5. Darling R S, Chou I M, Bodnar R J. Science, 1997, 276:91—936. Baxter P J, Bonadonna C, Dupree R et al. Science, 1999,283: 1142—11457. Santa D A, Mathew G, Khadkikar A S et al. CretaceousResearch, 2003, 24: 105—1108. Birch F, Geophys J. Res., 1986, 91: 4949—49549. Boehler R. Rev. Geophys., 2000, 38: 221—24510. Ghiribelli B, Frezzotti M L, Palmeri R. Eur. J. Mineral.,2002, 14: 355—360
  • 加载中

Get Citation
XIAO Wan-Sheng, LI YAN, LIU Jing, WENG Ke-Nan and XIE Hong-Sen. Transformations of Amorphous Silica under High Pressure and High Temperature[J]. Chinese Physics C, 2005, 29(S1): 116-119.
XIAO Wan-Sheng, LI YAN, LIU Jing, WENG Ke-Nan and XIE Hong-Sen. Transformations of Amorphous Silica under High Pressure and High Temperature[J]. Chinese Physics C, 2005, 29(S1): 116-119. shu
Milestone
Received: 2005-10-31
Revised: 1900-01-01
Article Metric

Article Views(3096)
PDF Downloads(664)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Transformations of Amorphous Silica under High Pressure and High Temperature

    Corresponding author: XIAO Wan-Sheng,
  • Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China2 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China3 Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China

Abstract: Aimed at the transformation methods and mechanism of amorphous silica on the conditions of high pressure and high temperature, we used the Changbaishan diatomite, which had been heating treated at 700°C, as the sample of amorphous silica, to carried out the in situ high pressure and high temperature synchrotron X-ray diffraction determinations (EDXD method) in the range of pressure of 0—4GPa and temperature of 1000—1300K by the diamond anvil cell apparatus and double-sided laser heating technique. The experimental results indicate that amorphous silica transform to α-quartz, but not β-quartz and cristobalite in the range of pressure of 0.8—2.4GPa and temperature of 1000—1300K. The crystalline temperature of amorphous silica under high pressure is much lower than that of ambient condition.The resluts means that the pressure is favored to low the activation energy of amorphous transform to crystalline phases,and would change the metastable phase transformation mechanism,leading to the different crystalline phases. In the range of pressure of 3—4GPa and temperature at 1300K, both amorphous silica and quartz transform to coesite.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return