Mechanical, Thermal, and Microstructural Properties of Neutron‐Irradiated SiC
Mechanical, Thermal, and Microstructural Properties of Neutron‐Irradiated SiC
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中子辐照 SiC 的机械、热和微观结构特性
DOI：
10.1111/j.1151-2916.1983.tb10596.x
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发表时间：
1983
影响因子：
3.9
通讯作者：
C. W. Lee
中科院分区：
文献类型：
--
作者：
J. Corelli;J. Hoole;J. Lazzaro;C. W. Lee
研究了反应堆中子辐照前后烧结α相SiC和硅化反应粘结SiC材料的导热率、导电率、断裂强度、膨胀和微观结构。使用 /sup 10/B 中富集的硼从 /sup 10/B(n,..cap alpha..)/sup 7/Li 生产氦气，研究了氦气对性能的影响。辐射后热导率的降低是由于辐射引起的缺陷增强了声子散射。热处理至 1000 至 1500 K 后，电气、机械和热性能表现出部分恢复。在辐射产生的性能变化和退火中观察到总体一致性，并提出了一个模型来解释这些变化。
The thermal and electrical conductivities, fracture strength, swelling, and microstructure of sintered alpha-phase SiC and siliconized reaction-bonded SiC materials were studied before and after irradiation with reactor neutrons. The effects of helium gas on the properties were studied using boron enriched in /sup 10/B to produce helium from /sup 10/B(n,..cap alpha..)/sup 7/Li. The decrease in thermal conductivity after irradiation is due to enhanced phonon scattering by radiation-induced defects. Electrical, mechanical, and thermal properties exhibit partial recovery after heat treatment to 1000 to 1500 K. An overall consistency is observed in radiation-produced property changes and annealing and a model is presented to explain the changes.