高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

PbWO4晶体的热膨胀及坩埚下降技术生长晶体开裂分析

廖晶莹; 沈炳孚; 邵培发; 殷之文   

  1. 中国科学院上海硅酸盐研究所; 上海200050
  • 收稿日期:1996-01-25 修回日期:1996-04-22 出版日期:1997-04-20 网络出版日期:1997-04-20

The Expansion and Analysis of the Cracking of PbWO4 Crystal Grownby Bridgman Technology

LIAO Jingying; SHEN Bingfu; SHAO Peifa; YIN Zhiwen   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1996-01-25 Revised:1996-04-22 Published:1997-04-20 Online:1997-04-20

PDF (PC)

1048

摘要： 本文报道了坩埚下降技术生长钨酸铅（PWO）晶体的热膨胀系数测量结果，讨论了热膨胀对晶体开裂的影响．同时探讨了克服晶体开裂的途径．由于生长时纵向温场效应以及（PWO）晶体大的热膨胀系数和它的显著的各向异性而引起的应变是导致晶体开裂的重要因素．

关键词: 钨酸铅晶体, 坩埚下降技术, 热膨胀系数, 晶体开裂

Abstract:

The thermal expansion coefficient of PWO crystals grown by Bridgman technology was measuredand its effects on the cracking of the crystals were discussed. The approach of overcoming the crack wasalso investigated. It was shown that the strains resulted from temperature distribution along the longitudeduring manufacture, and the large thermal expansion coefficient with tlie maked anisotropy of the crystalsare the important reason of the cracking.

Key words: lead tungstate crystal, Bridgman technology, thermal expansion coeffident, crystal crack