BGSO闪烁晶体力学性能研究

人工晶体学报, 2013, 42(1): 35-41.

BGSO闪烁晶体力学性能研究

肖学峰 ^1, , 顾赟 ^2, , 徐家跃 ^3, , 张彦 ^4, , 向卫东 ^5,

1.上海应用技术学院材料科学与工程学院,上海201418;北方民族大学物理系,银川750021;同济大学材料学与工程学院,上海201804

2.上海应用技术学院材料科学与工程学院,上海201418

3.上海应用技术学院材料科学与工程学院,上海201418

4.上海应用技术学院材料科学与工程学院,上海201418

5.同济大学材料学与工程学院,上海201804

基金项目: 国家自然科学基金(50972093) 上海市科委基础研究重点项目(11JC1412400) 国家973前期研究专项(2011CB612310) 北方民族大学自主科研项目(2011ZQY037)

关键词：闪烁晶体 , 坩埚下降法 , BGSO , 力学性能

Mechanical Properties of BGSO Scintillation Crystal

采用坩埚下降法生长了Ge的摩尔浓度分别为5％、10％、15％的硅锗酸铋晶体(BGSO).利用显微压痕实验系统研究了BGSO晶体的力学性能,包括维氏硬度Hv、断裂韧性Kc、屈服强度σ和脆性指数B.研究表明,BGSO晶体的力学性能参数Hv、Kc和σ随着Ge含量和载荷的增加而逐渐减小,而脆性指数B则增大.在Ge含量从0到15％范围内,BGSO晶体的力学性能基本上表现为BGO和BSO两种晶体力学性能的简单混合.

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