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研究金属/合金材料中气体原子的迁移、聚集和成泡机制,通常以研究微观缺陷捕获气体原子的微观机制为出发点,分析气体原子与缺陷的相互作用,已成为研究材料中气体原子热动力学机制的一个主要课题。热脱附谱仪(thermal desorption spectroscopy,TDS)采用原子质谱分析技术测量材料表面吸附气体的热脱附量随温度变化,获取气体元素原子与空位、位错等微观缺陷的结合能,以及气体原子/气泡的迁移能、热脱附能等热力学参数,从而研究材料中不同微观缺陷捕获气体原子以及气泡形成的微观机理。充分调研了国内外应用TDS技术研究金属/合金材料中气体元素与微观缺陷相互作用机理的最新进展,特别是应用TDS技术研究反应堆结构材料中辐照嬗变气体产物氢/氦与辐照缺陷的相互作用。
Studying the mechanism of gas atom migration, aggregation and foaming in metal / alloy materials, the microscopic mechanism of trapping gas atoms in microscopic defects is usually studied. The analysis of interaction between gas atoms and defects has become a hot topic in the field of gas atom thermodynamics A major issue of the mechanism. Thermal Desorption Spectroscopy (TDS) The atomic desorption spectroscopy (TDS) is used to measure the thermal desorption amount of adsorbed gas on the material surface with the temperature change, to obtain the binding energies of gas element atoms and vacancy, dislocation and other microscopic defects, as well as gas atoms / Bubble transfer energy, thermal desorption energy and other thermodynamic parameters to study the microscopic defects of the material trapped in different microscopic gas atoms and gas bubble formation mechanism. The recent progress in the research on the interaction mechanism of gas elements and microscopic defects in metal / alloy materials by using TDS technology at home and abroad has been thoroughly investigated. In particular, the interaction between hydrogen and helium and the irradiation defects of irradiated transmutant gas products in reactor structural materials effect.