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硬水铝石在高温高压下的弹性性质研究
  • ISSN号：1000-5773
  • 期刊名称：《高压物理学报》
  • 时间：0
  • 分类：TB303[一般工业技术—材料科学与工程]
  • 作者机构：[1]吉林大学原子分子物理研究所,吉林长春130012, [2]空军航空大学基础部,吉林长春130022, [3]延边大学理学院物理系,吉林延吉133002
  • 相关基金：国家自然科学基金资助项目（50772041;50772043;10874053;11074094;50802033）
作者： 杨洁[1,2], 刘鲍[1], 吴宝嘉[1,3]
关键词： 硬水铝石, 金刚石对顶砧, 高温高压, 压缩率, 体弹模量, diaspore, diamond anvil cell, high pressure and high temperature, compressibility
中文摘要：

利用激光加温金刚石对顶砧装置（DAC）并结合基于平面波赝势方法的密度泛函理论研究了高温高压下硬水铝石的压缩特性和晶格参数.研究表明：温度为1 900 K时,在较低压力区域（13.5～18 GPa）,a轴方向要比b和c轴方向更容易压缩,而在较高压力区域（18～27.87 GPa）3个轴的压缩性质趋于一致;硬水铝石在300 K,1 900 K及淬火后300 K条件下,等温体模量KT值分别为137.6 GPa,124.8 GPa和141.3 GPa;常压下且温度为300 K时,利用平面波赝势方法计算出的等温体模量KT值为139.3 GPa.

英文摘要：

The compressibility and unit-cell parameters of diaspore α-AlO（OH） was investigated by laser hearted diamond anvil cell and the density function theory calculations based on the plane-wave pseudo potential approach at high pressures and high temperature.Experimental results revealed that the a axial direction is more compressible than the b and c axial directions in the low-pressure range（13.5～18GPa） and at 1900K,whereas all the three directions show similar behaviors in the high-pressure range（18～27.8GPa）.The values of isothermal bulk modulus of diaspore are 137.6GPa,124.8GPa,and 141.3GPa respectively,at 300K,1900K and 300K after quenching.The calculated isothermal bulk modulus of diaspore by the plane-wave pseudo potential approach is equal to 129.3GPa at 300K and ambient pressure.

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期刊信息
  • 《高压物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:四川省科学技术协会
  • 主办单位:中国物理学会 高压物理专业委员会 四川省物理学会
  • 主编：邹广田
  • 地址：四川省绵阳市919信箱110分箱
  • 邮编：621999
  • 邮箱：gaoya@caep.cn
  • 电话：0816-2490042
  • 国际标准刊号：ISSN：1000-5773
  • 国内统一刊号：ISSN：51-1147/O4
  • 邮发代号:62-132
  • 获奖情况:
  • 中国物理类核心期刊,EI、CI收录期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:3617