大气悬浮颗粒物对钢铁材料环境腐蚀性影响程度的数学分析  

Effects of suspended particulates on atmospheric environmental corrosion by mathematical analysis

作　　者：程学群[1] 章光辉 李晓刚[1] CHENG XueQun;ZHANG GuangHui;LI XiaoGang(Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China)

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083

出　　处：《中国科学：技术科学》2018年第4期395-402,共8页Scientia Sinica(Technologica)

基　　金：国家重点研发计划项目(编号:2016YFB0700502);国家自然科学基金面上项目(批准号:51671028)资助

摘　　要：采用Kelvin探针测量技术连续监测钢铁材料在雾霾环境的SKP电位,监测结果表明大气悬浮颗粒物沉积在试样表面会促进试样表面的大气腐蚀;采用数学方差分析方法研究相对湿度、悬浮颗粒物等因素对促进钢铁腐蚀的贡献率,分析结果表明在湿度影响相同的情况下,钢铁材料在含有悬浮颗粒物的大气环境中发生腐蚀的倾向性至少提高33.62%,只要这些悬浮颗粒物一直沉积在钢铁表面,其加速材料腐蚀的风险始终存在.Kelvin probe technique was adopted in this paper to continuously monitor the SKP potential of iron and steel materials in smog environment. The monitoring results show that the deposition of atmospheric particles can promote the atmospheric corrosion of the sample surface. The contribution rate of relative humidity, suspended particles and other factors to promote the iron and steel corrosion was studied by variance analysis. The analysis results show that the corrosion tendency of steel in atmospheric environment containing suspended particles increase at least 33.62%, under the same relative humidity. As long as these particles have been deposited on the steel surface, the risk of acceleratting corrosion always exists.

关 键 词：雾霾 碳钢 腐蚀 环境 

分 类 号：X513[环境科学与工程—环境工程]