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根据万宁海洋大气试验站近3 a的大气环境数据,采用当量折算法,计算中性盐雾实验模拟万宁海洋大气环境所需的折算周期。以超深冲压冷轧板DC06和Q235钢为实验材料,研究二者在中性盐雾实验中的腐蚀行为,并通过灰色关联度法,定量研究中性盐雾加速实验和万宁海洋大气户外暴露实验的相关性。结果表明:DC06和Q235钢中性盐雾实验腐蚀动力学曲线拟合后均符合幂函数规律;DC06和Q235钢经计算周期(528 h·a-1)和常用周期(480 h·a-1)中性盐雾实验与万宁户外大气暴露实验的灰色关联度均大于0.6,符合室内外动力学一致性原则;DC06和Q235钢两种材料在折算周期(528 h·a-1)下的灰色关联度(0.6761,0.7383)大于常用周期(0.6029,0.6050)。
According to the atmospheric environment data of Wanning Marine Atmospheric Experiment Station in recent 3 years, the equivalent conversion method was used to calculate the conversion period required by the neutral salt spray experiment to simulate the marine atmosphere in Mannings. Ultra-deep-drawn cold-rolled steel DC06 and Q235 steel were used as experimental materials to study their corrosion behavior in neutral salt spray experiment. The gray correlation method was used to quantitatively study the neutral salt spray acceleration experiment and Wanning ocean atmosphere outdoor Relevance of exposure experiments. The results show that the corrosion kinetics curves of DC06 and Q235 steel fit the power function law. The DC06 and Q235 steel have the same cycle of calculation (528 h · a-1) and common cycle (480 h · a-1) ) Gray correlation of neutral salt spray experiment and Manning outdoor atmospheric exposure experiment were both greater than 0.6, in line with the principle of indoor and outdoor dynamic consistency; two materials of DC06 and Q235 steel at the conversion cycle (528 h · a-1) Gray correlation (0.6761,0.7383) is greater than the common cycle (0.6029,0.6050).