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分别运用腐蚀速率与暴露时间关系的指数模型（Ｄ＝ＡＴ，Ｄ＝ＡＴＢｅｃ／Ｔ）灰色系统”的ＧＭ（１，１）模型和环境综合因子模型预测碳钢和低合金钢的大气腐蚀率，并与挂片暴露试验结果进行比较．结果表明，相同材料在不同的大气环境下有着不同的腐蚀规律，碳钢和低合金钢的大气腐蚀预测可选择不同的预测模型．
The atmospheric corrosion rate of carbon steel and low alloy steel was predicted by using GM (1,1) model and environmental comprehensive factor model of gray system with exponential model of corrosion rate and exposure time (D = AT, D = ATBec / T) The results show that the same material has different corrosion rules under different atmospheric conditions, and different prediction models can be selected for the atmospheric corrosion prediction of carbon steel and low alloy steel.