科研之友
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摘要
Hydrogen permeation behavior was studied by many researchers, uniaxial tensile stress may affect the behavior due to the deformation of specimen. However, less study focused on hydrogen permeation behavior during Slow Strain Rate Test (SSRT). In order to clarify elastic and plastic deformation effect on hydrogen permeation, hydrogen permeation behavior was measured by D-S double cell during SSRT in this study. The results show that the background current density increases in elastic deformation range during SSRT due to the damage of thin Ni coating. Hydrogen permeation current density increases slowly in elastic deformation range and decrease quickly in plastic range. The main reason of Hydrogen permeation current density decrease is trapping effect of dislocations that was formed in plastic deformation. Hydrogen permeation current density was affected by the competition mechanism between dislocation trapping and dislocation transport of hydrogen.
- 出版日期2017-9
- 单位江苏科技大学
