The characteristics of calcareous deposits under strong cathodic current and their effect on hydrogen uptake of X80 steel in simulated soil environments were studied by scanning electron microscopy (SEM), hydrogen permeation technique, and hydrogen content tests. When the impressed cathodic current density was in the range of 10–75 mA/cm², granular or squamous CaCO₃ deposits were generated on the surface, forming discontinuous surface layer with pores and gaps of various sizes. When the current density was increased to 100 mA/cm² and 125 mA/cm², a dense Mg (OH)₂ film was formed on the surface. With the increase of current density, the sub-surface hydrogen concentration and average hydrogen content first increased and then decreased, reaching the turning point at 75 mA/cm². Combined with the structure and component characteristics of calcareous deposits, the mechanism of their effect on hydrogen uptake was analyzed.

通过扫描电子显微镜（SEM），氢渗透技术和氢含量测试，研究了强阴极电流下钙质沉积物的特征及其对X80钢在模拟土壤环境中氢吸收的影响。当施加的阴极电流密度在10–75 mA / cm ²的范围内时，在表面上会生成颗粒或鳞状的CaCO ₃沉积物，从而形成不连续的表面层，并形成具有各种尺寸的孔和间隙。当电流密度增加到100 mA / cm ²和125 mA / cm ^2时，致密的Mg（OH）₂在表面上形成膜。随着电流密度的增加，地下氢浓度和平均氢含量先上升然后下降，达到转折点为75 mA / cm ²。结合钙质矿床的结构和组分特征，分析了其对氢吸收的影响机理。