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采用扫描电镜 (SEM EDAX)和显微红外光谱技术对Zn在相对湿度为 90 %和 0 .9× 1 0 -6SO2 的控制气氛条件下初期腐蚀表面和腐蚀产物进行了研究 .1 0h以后腐蚀表面呈现均匀分布的凹凸形貌特征 ,直到数日后开始萌生局部腐蚀 .测试结果表明局部腐蚀的产物为碱式水合硫酸盐
The initial corrosion surface and corrosion products of Zn under the controlled atmosphere of 90% relative humidity and 0.9 × 10 -6 SO 2 were studied by scanning electron microscopy (SEM EDAX) and microscopic infrared spectroscopy. The corrosion surface Showing uniform distribution of the uneven topography until a few days after the initiation of local corrosion initiation test results show that the local corrosion products of basic hydrated sulfate