【摘要】 采用超高真空气相氢渗透技术,研究氢在Inconel 690合金的扩散和渗透行为,获得了不同厚度690合金样品在300~500℃温度范围内的氢渗透曲线,讨论了该合金厚度对扩散特性与渗透特性的影响。结果表明:在一定温度范围内,Inconel 690合金的氢扩散系数(D)、渗透系数(P)随温度变化关系遵循Arrhenius方程;在一定厚度范围内,氢扩散系数随样品厚度增加而增高并趋近于690合金的实际体扩散系数;样品厚度对氢渗透系数的变化影响较小。更多还原

【Abstract】 The diffusivity and permeability of hydrogen in Inconel 690 alloy were investigated using an ultra-high vacuum gaseous permeation technique.The curves of hydrogen permeation of 690 alloy materials with different thickness over the temperature range of 300~500℃ were gained,and the effects of thickness of 690 alloy on the hydrogen diffusivity(D) and permeability(P) were discussed.The results indicated that the diffusivity and permeability of hydrogen with the change of temperature in Inconel 690 alloy were conformed to Arrhenius relationship in the extent experimental temperature range.The hydrogen diffusivity increased with the increasing of samples thickness and equal to the actual body diffusivity of Inconel 690 alloy,and the hydrogen permeability kept constant with the increasing of sample thickness.更多还原