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一、前言在金属的应力腐蚀开裂(SCC)的研究中,普遍认为裂纹前沿处于塑变状态。关于塑变对裂纹前沿阳极溶解动力学的影响,见诸于许多报导。对于塑变促进阳极溶解的机理,存在不同的解释。这是由于在腐蚀体系中,塑变促进金属阳极溶解的因素十分复杂,它与材料,腐蚀环境,应力大小等因素都有密切的关系。本工作选择Cu/酸性CuSO_4溶液这一可逆体系来研究金属的力学状态对溶解过程的影响。
I. INTRODUCTION In the study of metal stress corrosion cracking (SCC), it is generally accepted that the crack front is in a plastic state. The effect of plastic deformation on the kinetics of the anodic dissolution of cracks has been reported in many reports. There are different interpretations of the mechanism by which plastic deformation promotes anode dissolution. This is due to the fact that in the corrosion system, the factors that promote the dissolution of the metal anode by the plastic deformation are very complicated, which are closely related to the factors such as the material, the corrosion environment, the size of the stress, and the like. In this work, a reversible system of Cu / acidic CuSO_4 solution was chosen to study the influence of the mechanical state of the metal on the dissolution process.