EFFECT OF ISOCHRONAL ANNEALING ON THERMAL-DIFFUSIVITY OF NEUTRON-IRRADIATED AIN

Authors
YANO T MIYAZAKI H ISEKI T
Citation
T. Yano et al., EFFECT OF ISOCHRONAL ANNEALING ON THERMAL-DIFFUSIVITY OF NEUTRON-IRRADIATED AIN, Journal of nuclear materials, 230(1), 1996, pp. 74-77
Citations number
21
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
230
Issue
1
Year of publication
1996
Pages
74 - 77
Database
ISI
SICI code
0022-3115(1996)230:1<74:EOIAOT>2.0.ZU;2-V
Abstract
High thermal diffusivity and insulating aluminum nitride (AlN) ceramic was neutron-irradiated in the Japan Materials resting Reactor. Fast n eutron fluence and irradiation temperature of the specimens were 1.8 x 10(23) n/m(2) at 100 degrees C and 5.3 x 10(24) n/m(2) ar 470 degrees C (E > 0.1 MeV), respectively. Change in thermal diffusivity due to i sochronal thermal annealing up to 1400 degrees C was measured by the l aser-flash method. As compared with macroscopic length change, it was concluded that thermal diffusivity of irradiated AlN was controlled by concentration of irradiation-induced vacancies.