Abstract The investigation of the mechanisms and dynamics of hydrogen isotopic interaction with solid surfaces (metals, ceramics, graphites, eutectics) in temperature and pressure ranges is important not only for the correct prediction of each isotope’s evolution but also for substantiation of the safe operation of hydrogen-facing structural materials. The interaction of the hydrogen isotopes mix with the surface of solid metal or liquid eutectics is a complicated multistage H-D-T-O-solid interacting process depending on material property, environment, and the solid’s surface parameters. To better understand the mechanisms of hydrogen isotopes interchange at a solid surface and to identify the limiting stages in the sorption-desorption processes, a reactor experiment of neutron irradiation was conducted with lithium-containing eutectics as tritium-generating media under the external flow of hydrogen. This work presents the model and results of its application to fitting the experimental results of tritium yield from the lithium-lead eutectics Pb83Li17 under thermal neutrons irradiation at the IVG.1M reactor in Kazakhstan. The elaborated model and the approach used were also applied to the simulation of high-temperature gas-cooled reactor graphite corrosion in water vapors.

中文翻译：

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模拟氢同位素与固体表面相互作用的过程

摘要 研究氢同位素在温度和压力范围内与固体表面（金属、陶瓷、石墨、共晶）相互作用的机制和动力学不仅对正确预测每种同位素的演化很重要，而且对证实安全操作也很重要。面向氢的结构材料。氢同位素混合物与固体金属或液体共晶表面的相互作用是一个复杂的多阶段 HDTO-固体相互作用过程，取决于材料特性、环境和固体表面参数。为了更好地了解氢同位素在固体表面交换的机制并确定吸附-解吸过程中的限制阶段，以含锂共晶为氚生成介质，在氢气外流下进行中子辐照反应堆实验。这项工作介绍了模型及其应用结果，以拟合哈萨克斯坦 IVG.1M 反应堆在热中子辐照下锂铅共晶 Pb83Li17 的氚产率实验结果。精心设计的模型和所使用的方法也应用于模拟高温气冷堆石墨在水蒸气中的腐蚀。