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用阴极电解充氢法，对具有塑性变形及拉伸应力的低碳钢板中溶氢及逸氢过程进行了研究，回归出经验公式，计算出扩散系数及扩散激活能．结果表明，溶氢时的扩散系数比逸氢时大，溶氢时的扩散激活能比逸氢时小；随变形和压力的增大，溶氢时扩散系数增大，扩散激活能减小；逸氢时扩散系数减小，扩散激活能增大．
Hydrogen evolution and hydrogen evacuation in low carbon steel sheets with plastic deformation and tensile stress were studied by cathodic electrolysis and hydrogen charging. The empirical formula was regressed and the diffusion coefficient and diffusion activation energy were calculated. The results show that the diffusion coefficient is larger than that of hydrogen evolution when hydrogen is dissolved, and the diffusion activation energy is smaller than that of hydrogen evolution when hydrogen is dissolved. With the increase of deformation and pressure, the diffusion coefficient increases and the activation energy of diffusion decreases when hydrogen is dissolved. When hydrogen evolves, the diffusion coefficient decreases and the diffusion activation energy increases.