Impact factor weight analysis of atmospheric corrosion rate of carbon steel based on MIV

被引：0

作者：

Yang B. ^{[1
]}

Li J. ^{[1
]}

Wen L. ^{[1
]}

机构：

[1] Materials Service Safety Assessment Facilities, University of Science and Technology Beijing, Beijing

来源：

Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2018年 / 44卷 / 08期

关键词：

Atmospheric corrosion; Carbon steel; Corrosion rate; Impact factor; Mean impact value (MIV);

D O I：

10.13700/j.bh.1001-5965.2017.0638

中图分类号：

学科分类号：

摘要：

Based on the mean impact value (MIV) which is an impact factor weight analysis method, the weights of fifteen impact factors on corrosion rate of four types of carbon steels (Q235, Ste355, St12, and Q450) were evaluated. The impact factors were corrosion duration, temperature, humidity, sunshine hours, precipitation, wind speed, sea salt ion concentration, SO2, HCl, NO2, H2S, sulfation rate, NH3, water soluble dust fall, and non-water soluble dust fall. These fifteen factors cover three important categories: corrosion duration, climatic factor, and environmental factor. The results show that when the regulation rate of MIV increases from 5% to 25% gradually, for different carbon steels, the weights of impact factors were similar, while the degrees of sensitivity were a little different; in the three categories, the climatic factor is of the largest impact on corrosion rate, followed by corrosion duration. The weights of SO2 and dust fall are larger among the environmental factors. The most important three factors influencing the corrosion rate are mean relative humidity, sunshine hours, and mean temperature. © 2018, Editorial Board of JBUAA. All right reserved.

引用

页码：1620 / 1628

页数：8

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