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研究了黄铜在静态腐蚀过程中表面疏松层的应力状态．通过测量自由端挠度的变化及用 Ｓ Ｅ Ｍ 技术测量脱 Ｚｎ 层的厚度，计算了在脱 Ｚｎ 层和基体界面处产生的拉应力，其稳定值约等于黄铜屈服强度的 １／５．在 Ｓ Ｃ Ｃ 过程中这个附加的拉应力将协助外应力促进位错发射和运动，从而 Ｓ Ｃ Ｃ裂纹形核
The stress state of the surface loose layer of brass during static corrosion was studied. By measuring the variation of free end deflection and measuring the thickness of de-Zn layer by SEM, the tensile stress at the interface between de-Zn layer and matrix was calculated, and its stability value was about 1/5 of the yield strength of brass. This additional tensile stress in the S C C process will assist the external stress in promoting the dislocation emission and movement and thus the S C C crack nucleation