A HREM STUDY OF NEUTRON-IRRADIATION-INDUCED DISLOCATIONS IN ALUMINUM NITRIDE

被引：17

作者：

YANO, T

ISEKI, T

机构：

[1] Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Tokyo 152, O-okayama

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1990年 / 62卷 / 02期

关键词：

D O I：

10.1080/09500839008203743

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminium nitride polycrystals have been irradiated to fluences up to 5.2 x 1024neutrons m-2(£>10 MeV) in a thermal-fast mixed reactor, the JMTR. Dislocations induced by the neutron irradiation were studied by high- resolution electron microscopy coupled with a multi-slice simulation. Very small interstitial loops, a few nanometres in diameter, lying on the (0001) plane of AIN were observed directly for the specimens irradiated to fluences higher than 2.4 x 1024neutrons m-2, and it was determined that those loops have a Burgers vector of (c/2)[0001]. The dilation of the c axis by neutron irradiation was greater than that of the a axis, and this anisotropy of the lattice dilation is ascribed to the formation of interstitial loops lying on the basal plane. © 1990 Taylor & Francis Group, LLC.

引用

页码：83 / 87

页数：5

共 9 条

[1]

BILLY M, 1984, REV INT HAUTES TEMP, V21, P19

[2] NEUTRON-IRRADIATION DAMAGE IN MGO, AL2O3 AND MGAL2O4 CERAMICS [J].