Bubble Formation in Apatite Structures by He-Ion Irradiation at High Temperature  

作　　者：Cai-Yu Wu Ting-Ting Gao Zhi-Wei Lin Yue Zhang Huan-Huan He Jian Zhang 吴采宇;高庭庭;林智威;张悦;何环环;张建(College of Energy,Xiamen University,Xiamen 361005;Laboratory of Dielectric Materials,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027;College of Physical Science and Technology,Xiamen University,Xiamen 361005)

机构地区：[1]College of Energy,Xiamen University,Xiamen 361005 [2]Laboratory of Dielectric Materials,School of Materials Science and Engineering,Zhjiang University,Hangzhou 310027 [3]College of Physical Science and Technology,Xiamen University,Xiamen 361005

出　　处：《Chinese Physics Letters》2020年第5期77-80,共4页中国物理快报（英文版）

基　　金：Natural Science Foundation of Fujian Province,China(Grant No.2017J01007);partially by the Energy Development Foundation of Energy College(Grant No.2018NYFZ01)。

摘　　要：Apatite ceramics Ca10(PO4)6 X2(X=F,OH)were prepared by the standard solid state sintering method and irradiated with He ions under a fluence of 5×10^16 ions/cm^2 at 450℃.Irradiation induced formation and growth of the He bubbles were observed by a transmission electron microscope.Hydroxyapatite Ca10(PO4)6(OH)2 and fluoroapatite Ca10(PO4)6 F2 with different He bubble morphologies indicate the influence of OH^-/F^-substitution on the He-ion annealing efficiency,as well as the structure itself,which affects the process of He bubble evolution and formation.The grain boundaries also act as sinks to accumulate He bubbles.No obvious irradiation damage but slight intensity reduction and left shift of diffraction peaks were observed according to the grazing incidence x-ray diffraction and Raman spectra characterizations,indicating that defects of interstitials and vacancies were generated.

关 键 词：GRAIN BUBBLE CERAMICS 

分 类 号：TQ174.1[化学工程—陶瓷工业] X771[化学工程—硅酸盐工业]