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无机材料学报

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Ca2YO(BO3)3晶体的热物理性质研究

谢华清1; 罗军1; 奚同庚1; 王锦昌1; 范世Qi1; 刘岩1; 吴清仁2   

  1. 1. 中国科学院上海硅酸盐研究所, 上海 200050; 2. 华南理工大学材料系, 广州 510641
  • 收稿日期:2001-03-01 修回日期:2001-03-21 出版日期:2002-03-20 网络出版日期:2002-03-20

Thermophysical Properties of Ca2YO(BO3)3 Crystal

XIE Hua-Qing1; LUO Jun1; XI Tong-Geng1; WANG Jin-Cang1. FAN Shi-Qi1; LIU Yan1; WU Qing-Ren2   

  1. 1.; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050. China; 2. Department of Materials; South China University of Technology; Guangzhou 510641, China
  • Received:2001-03-01 Revised:2001-03-21 Published:2002-03-20 Online:2002-03-20

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摘要： 测量了新型非线性激光晶体Ｃａ２ＹＯ（ＢＯ３）３（ＹＣＯＢ）的比热及其沿ａ、ｂ、ｃ三个方向的热膨胀系数、热扩散系数、导热系数、声子平均自由程和等效声速等热物理性质；讨论了属于单斜晶系的ＹＣＯＢ晶体的热物性的各向异性行为；实验结果表明ＹＣＯＢ晶体具有较大的比热和导热系数，其热膨胀系数各向异性相对较小，具有良好的热物理和力学性能．

关键词: Ca2YO（BO3）3晶体, 比热, 热膨胀系数, 热扩散系数, 导热系数, 声子自由程

Abstract: The specific heat, thermal expansion, thermal diffusivity, thermal conductivity and phonon mean free path of
Ca2YO(BO3)3 crystal were measured. The anisotropic behavior of the thermal expansion, thermal diffusivity, thermal conductivity and
phonon free path of CaYO(BO3)3 crystal was discussed. The experimental results indicate that CaYO(BO3)3 crystal has good mechanical and thermal
properties in application of high energy laser beam because the specific heat and the thermal conductivity of this crystal are large.

Key words: CaYG（BO3）3 crystal: specific heat: thermal expansion: thermal conductivity:

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