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Synthesis of ZrSiO4 and Coesite in SiO2-ZrO2 System Under High Pressure |
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| Authors: | XUE Yan-feng XU Da-peng ZHANG Guang-qiang ZHOU Xian-feng DING Zhanhui LIU Xiao-mei SU Wen-hui |
| Institution: | [1]College of Physics, Jilin University, Changchun 130012, P. R. China [2]Center for the Condensed-MatterScience and Technology, Harbin Institute of Technology, Harbin 150001, P. R. China [3]International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, P. R. China |
| Abstract: | ZrSiO4 and coesite were obtained under high-pressure and high-temperature from the nano precursor of α-SiO2 and ZrO2.XRD and Raman measurements indicate that ZrSiO4 Was formed at a temperature higher than 920℃ under a pressure of 3.6 GPa.As the pressure increased to 3.9 GPa,the ZrSiO4 formation temperature Was reduced to 815℃.The formation temperature for coesite was 990℃ under 3.9 GPa.The lower formation temperature for ZrSiO4,as compared to that for coesite.provided an experimental evidence that the coesite in the Earth'S surface usually Occurs as inclusions in ZrSiO4. |
| Keywords: | ZrSiO4 Coesite High pressure synthesis Mechanical ball milling |
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