| 立方烧绿石Gd_2Zr_2O_7的高温高压合成 |
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| 引用本文： | 唐敬友,陈晓谋,潘社奇,牟涛,贺端威.立方烧绿石Gd_2Zr_2O_7的高温高压合成[J].原子能科学技术,2010,44(4):394-399. |
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| 作者姓名： | 唐敬友 陈晓谋 潘社奇 牟涛 贺端威 |
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| 作者单位： | 1.西南科技大学 ;核废物与环境安全国防重点学科实验室，四川 ;绵阳621010；2.中国工程物理研究院，四川 ;绵阳621900；3.四川大学 ;原子与分子物理研究所，四川 ;成都610065 |
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| 基金项目： | 国家自然科学基金，西南科技大学核废物与环境安全国防重点学科实验室培育基金资助项目 |
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| 摘 要： | 为探索高温高压固相反应法合成Gd2Zr2O7烧绿石的可能性,以Gd2O3和ZrO2的混合粉体为原料,在5.2GPa压力、1473～1873K温度范围内进行了实验研究。通过XRD对合成样品进行了结构表征,结果证实,在5.2GPa和1873K条件下,保温保压30min,成功地合成出单一物相的、具有立方烧绿石结构的Gd2Zr2O7化合物。这种新的合成方法对于开展武器级多余钚和含钚高放废物固化具有重要的科学价值和实际意义。
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| 关 键 词： | Gd2Zr2O7 烧绿石 高温高压 合成 放射性废物固化体 |
Synthesis of Gd_2Zr_2O_7 Pyrochlore With Cubic Structure at High Pressure and High Temperature Conditions |
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| TANG Jing-you,CHEN Xiao-mou,PAN She-qi,MU Tao,HE Duan-wei.Synthesis of Gd_2Zr_2O_7 Pyrochlore With Cubic Structure at High Pressure and High Temperature Conditions[J].Atomic Energy Science and Technology,2010,44(4):394-399. |
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| Authors: | TANG Jing-you CHEN Xiao-mou PAN She-qi MU Tao HE Duan-wei |
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| Affiliation: | 1.Key Laboratory of Defensive Discipline on Nuclear Wastes and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, China;2.China Academy of Engineering Physics, P. O. Box 919-71, Mianyang 621900, China;3.Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China |
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| Abstract: | In order to investigate the possibility to synthesize cubic pyrochlore Gd2Zr2O7 by solid-solid reactions under high pressure and high temperature conditions,the synthesis experiments were carried out at a fixed pressure of 5.2 GPa and a temperature range of 1 473-1 873 K using the mixed powders of Gd2O3 and ZrO2 as starting materials. The as-synthesized samples were characterized by XRD. The results show that a single phase compound Gd2Zr2O7 with a cubic pyrochlore structure is successfully synthesized at 5... |
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| Keywords: | Gd2Zr2O7 |
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