TRAPPING OF DEUTERIUM IN BORON AND TITANIUM-MODIFIED GRAPHITES BEFORE AND AFTER CARBON ION IRRADIATION

被引：16
|
作者：
CHERNIKOV, VN [1 ]
GORODETSKY, AE [1 ]
KANASHENKO, SL [1 ]
ZAKHAROV, AP [1 ]
WAMPLER, WR [1 ]
DOYLE, BL [1 ]
机构：
[1] SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 1994年 / 217卷 / 03期
基金：
美国能源部;
关键词：
D O I：
10.1016/0022-3115(94)90374-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nuclear reaction analysis was used to investigate the retention of deuterium (D) at radiation damage in new graphites USB-15, PGI, RG-Ti-91, RG-Ti-91 with 0.5 wt%B made in Russia and in POCO AXF-5Q graphite. Samples were irradiated with C+ ions to produce damage up to doses of approximately 10 displacements per atom (dpa), and then soaked in deuterium gas at 1473 K. The concentration of D in the damaged region increased with damage and saturated for damage levels above about 1 dpa. At saturation the smallest D concentration was found in USB-15 (approximately 60 appm), and the largest D concentration was found in RG-Ti-91 (approximately 1500 appm). Based on microstructural investigations done by TEM, an attempt was made to relate differences in concentrations of retained D to variations in radiation-induced trap concentration and to kinetic limitations for D atom access to traps available. The effect of boron on D trapping in graphite was also examined.
引用
收藏
页码：250 / 257
页数：8
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