Macroscopic length, lattice parameter and microstructural changes in neutron-irradiated aluminum nitride due to annealing
Macroscopic length, lattice parameter and microstructural changes in neutron-irradiated aluminum nitride due to annealing
复制标题
中子辐照氮化铝退火引起的宏观长度、晶格参数和微观结构变化
DOI：
10.1016/s0022-3115(09)80124-4
复制
发表时间：
1992
影响因子：
3.1
通讯作者：
T. Iseki
中科院分区：
文献类型：
--
作者：
T. Yano;M. Tezuka;H. Miyazaki;T. Iseki
在日本材料试验堆中对氮化铝进行中子辐照，辐照强度达到5.2×1024n/m2（E> 1.0 MeV）。试样在1400℃真空下进行等时退火。在100℃左右辐照到8.3 × 1022n/m2时，试样的a轴和C轴宏观长度和晶格参数随退火温度的升高而减小，在1100℃退火后恢复到辐照前的值。在470°C和785°C分别辐照到2.4×1024n/m2和5.2×1024n/m2时，均含有密集的间隙位错环，但退火到800-900°C时，对试样的宏观长度没有显著影响。然后随着退火温度的升高迅速下降，退火温度可达1400℃。900 ~ 1000℃退火后，C -轴晶格参数的变化大于a-轴，1400℃退火后，晶格参数的变化减小到辐照前的值。
Aluminum nitride was neutron-irradiated in the Japan Materials Testing Reactor up to 5.2×1024n/m2(E> 1.0 MeV). The specimens were isochronally annealed under a vacuum up to 1400°C. The macroscopic length and lattice parameters of botha- andc-axis of the specimen irradiated to 8.3 × 1022n/m2at about 100°C decreased concurrently with an increase in annealing temperature from 100°C, and returned to the pre-irradiated values after annealing at 1100°C. The macroscopic lengths of the specimens irradiated to 2.4×1024n/m2at 470°C and 5.2×1024n/m2at 785°C, both containing dense interstitial dislocation loops, were not significantly influenced by annealing up to 800–900°C. Then they decreased rapidly with increasing annealing temperature up to 1400°C. The change inc-axis lattice parameter by annealing was larger than that ofa-axis above 900–1000°C, and finally reduced to the pre-irradiated values after annealing at 1400°C.