氟化铅晶体中的散射颗粒

无机材料学报

氟化铅晶体中的散射颗粒

任国浩; 沈定中; 王绍华; 殷之文

中国科学院上海硅酸盐研究所, 上海 200050

收稿日期:1998-08-28 修回日期:1998-11-26 出版日期:1999-08-20 网络出版日期:1999-08-20

Scattering Particles in Lead Fluoride Crystals

REN Guo-Hao, SHEN Ding-Zhong, WANG Shao-Hua, YIN Zhi-Wen

Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China

Received:1998-08-28 Revised:1998-11-26 Published:1999-08-20 Online:1999-08-20

摘要/Abstract

摘要： 本文根据光学显微镜观察、电子探针和扫描电镜的ＥＤＳ成分分析，首次确定存在于氟化铅晶体中的散射颗粒为金属铅，其形态具有从无规则形向菱形多面体逐渐演化的特征，这些颗粒中总有一个比较平直的表面与氟化铅晶体的（１００）面相平行 推测它们的形成经历了金属铅的还原、熔体的包裹、定向成核和固化等过程

关键词: 氟化铅晶体, 散射颗粒, 金属铅

Abstract: Based on the observation with optical microscope and analysis by EDS of electron microprobe and scan electron microscope, the scattering particles existing
in lead fluoride crystals were firstly confirmed to be lead metal. Their shapes are characterized by gradually evolving from irregrlar shape to diamond shape. There is a face
which direction is always parallel to the (100) face of PbF₂ crystal. It was suggested that the scattering particles are formed from the following process: reduction
of lead metal, inclusion of melt, nucleation and solidification along some direction of PbF_2 crystal.

Key words: PbF₂ crystal, scattering particle, lead metal

中图分类号:

O731

任国浩,沈定中,王绍华,殷之文. 氟化铅晶体中的散射颗粒[J]. 无机材料学报.

REN Guo-Hao,SHEN Ding-Zhong,WANG Shao-Hua,YIN Zhi-Wen. Scattering Particles in Lead Fluoride Crystals[J]. Journal of Inorganic Materials.