Neutron irradiation effects on SiO2 and SiO2-based glass ceramics
Neutron irradiation effects on SiO2 and SiO2-based glass ceramics
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中子辐照对 SiO2 和 SiO2 基玻璃陶瓷的影响
DOI：
10.1016/0022-3115(82)90691-2
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发表时间：
1981
影响因子：
3.1
通讯作者：
B. Olbert
中科院分区：
文献类型：
--
作者：
D. Porter;M. Pascucci;B. Olbert
为评估某些微晶玻璃材料的抗辐射损伤能力建立了初步的数据库。它们在结构和成分上都是相当复杂的材料，但具有聚变反应堆设计中结构和绝缘体应用所需的许多特性。在400°C和550°C下对∼2.4x1022n/cm2的快(E>；0.1 MeV)中子辐照后进行了性能测量。结果表明，对热膨胀的变化具有普遍的抵抗力，大多数材料没有经历严重的机械完整性损失。几种氟金云母基微晶玻璃的体积膨胀率最大(~3.0%)。若干观察表明，中子和电子辐照的影响不同；需要考虑投影反应堆用途原型的辐照条件，以选择最佳材料。
A preliminary data base to assess the radiation damage resistance of some glass ceramic materials has been gathered. These are rather complex materials, both in structure and composition, but possess many of those properties required for structural, insulator applications in fusion reactor design. Property measurements were made after fast (E>0.1 MeV) neutron irradiations of ∼2.4 × 1022n/cm2at 400°C and 550°C. The results have shown general resistance to changes in thermal expansion and most did not experience severe loss of mechanical integrity. The maximum volume expansion occurred in several of the fluorophlogopite-based glass ceramics (~3.0%). Several observations demonstrated differences between the effects of neutron and electron irradiation; irradiation conditions prototypic of projected reactor uses need be considered for optimum materials selection.