Study of helium effects in SiC/SiC composites under fusion reactor environment
Study of helium effects in SiC/SiC composites under fusion reactor environment
复制标题
聚变反应堆环境下SiC/SiC复合材料的氦效应研究
DOI：
10.1016/s0022-3115(00)00375-5
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发表时间：
2000
影响因子：
3.1
通讯作者：
R. Jones
中科院分区：
文献类型：
--
作者：
A. Hasegawa;B. M. Oliver;S. Nogami;K. Abe;R. Jones
使用热解吸方法研究了氦离子注入 SiC/SiC、整体 β-SiC 和 SiC 纤维 (Hi-Nicalon) 的氦释放行为，退火温度在 500°C 至 1600°C 之间，增量为 100°C。 SiC/SiC 复合材料在低于 500°C 时开始释放氦气，而在整体 β-SiC 中，在高于 1000°C 时观察到氦气释放。 β-SiC 释放的氦气量是复合材料释放的氦气量的 1/10 至 1/50。当温度高于 1300°C 时，光纤中的氦气释放变得明显。低温下复合材料中氦的释放可能归因于碳界面中氦的释放。讨论了聚变反应堆条件下 SiC/SiC 复合材料中嬗变氦的行为。
Helium release behavior from He-ion implanted SiC/SiC, monolithic β-SiC, and SiC fiber (Hi-Nicalon) was studied using the thermal desorption method with annealing temperatures between 500°C and 1600°C in 100°C increments. Helium release from SiC/SiC composites began below 500°C, while from monolithic β-SiC, helium release was observed above 1000°C. The magnitude of the helium released from β-SiC was 1/10 to 1/50 of the helium released from the composites. Helium release from the fiber became apparent above 1300°C. Helium release from composites at low temperature might be attributed to helium release from the carbon interphase. Behavior of transmuted helium in the SiC/SiC composites under fusion reactor conditions is discussed.