Effects of Thermal Annealing on the Macroscopic Dimension and Lattice Parameter of Heavily Neutron-Irradiated Silicon Carbide
Effects of Thermal Annealing on the Macroscopic Dimension and Lattice Parameter of Heavily Neutron-Irradiated Silicon Carbide
复制标题
热退火对强中子辐照碳化硅宏观尺寸和晶格参数的影响
DOI：
10.3327/jnst.29.656
复制
发表时间：
1992
影响因子：
1.2
通讯作者：
T. Iseki
中科院分区：
文献类型：
--
作者：
H. Miyazaki;Tetsuya Suzuki;Tetsuya Suzuki;T. Yano;T. Iseki
反应烧结的β-SiC样品在快中子增殖堆中进行中子辐照，辐照剂量为3.0×1024 ~ 1.7×1027 n/m2（E> 0.1MeV），温度为370 ~ 620°C。超过4.8×1026 n/m2的注量照射引起的膨胀（生长）在宏观尺寸方面明显大于晶格参数。这些高度辐照的标本也表现出显着扩大其X射线线轮廓，伴随着产生的间隙位错环。退火后，所有的标本，不管他们已经被照射的能量密度，倾向于恢复其膨胀的宏观尺寸和晶格参数。当退火温度超过辐照温度时，这种趋势开始，残余溶胀的百分比大致与退火温度成比例地降低。更高的辐照试样，其中的宏观尺寸膨胀显着超过晶格参数，降低其百分比。
Reaction-sintered β-SiC specimens were neutron-irradiated in fast breeder reactors to fluences from 3.0×1024 to 1.7×1027 n/m2 (E>0.1 MeV) at temperatures from 370 to 620°C. Irradiation to fluences above 4.8×1026 n/m2 caused swelling (growth) that was significantly greater in respect of macroscopic dimension than of lattice parameter. These highly irradiated specimens also showed significant broadening of their X-ray line profiles, accompanied by generation of interstitial dislocation loops. Upon annealing, all specimens, irrespectively of the fluence to which they had been irradiated, tended toward recovery of their swelled macroscopic dimension and lattice parameter. This tendency was initiated when the annealing temperature exceeded that of irradiation, with the percentage of residual swelling lowering roughly in proportion to annealing temperature. The more highly irradiated specimens, in which the macroscopic dimension had swelled significantly more than the lattice parameter, lowered their percentage...
影响因子：
1.6
作者：
T. Yano;T. Iseki
通讯作者：
T. Yano;T. Iseki