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利用阵列电极技术与腐蚀埋片相结合的方法,以Q235钢为研究材料,经自然热带临海红壤埋片,研究了Q235钢的宏观非均匀腐蚀行为。结果表明:Q235钢材料在时间维度上和垂直地面的空间维度上皆发生非均匀腐蚀。时间维度上发生非均匀腐蚀的原因是降雨频率与降雨量对土壤湿度的影响,从而影响Q235钢的腐蚀环境;垂直地面的空间维度上发生非均匀腐蚀的原因是随土壤深度增加,土壤湿度变化、含氧量变化及土壤组成成分差异的影响。在0~90 cm深度土壤范围内,随土壤深度的增加,Q235钢的腐蚀速率增加。垂向埋于热带滨海红壤中的长尺寸Q235钢在30~50、80和140~150 cm 3个范围内,因电偶腐蚀影响,腐蚀速率较大。
Based on the combination of array electrode technology and corrosion burial, Q235 steel was used as the research material to investigate the macroscopic non-uniform corrosion behavior of Q235 steel by immersing natural red seawater into the sea. The results show that non-uniform corrosion of Q235 steel occurs in both the time dimension and the vertical dimension of the ground. The reason of non-uniform corrosion on the time dimension is the influence of rainfall frequency and rainfall on soil moisture, which will affect the corrosion environment of Q235 steel. The reason of non-uniform corrosion on vertical dimension is that with the increase of soil depth, , Oxygen content changes and soil composition differences. The corrosion rate of Q235 steel increased with soil depth at 0 ~ 90 cm soil depth. Longitudinally buried in the tropical coastal red soil in the long Q235 steel in the 30 ~ 50,80 and 140 ~ 150 cm 3 range, due to galvanic corrosion, the corrosion rate.