1Cr18Ni9Ti在酸性高锰酸钾去污中腐蚀行为的影响因素  

Influence Factors of Corrosion Behavior of 1Cr18Ni9Ti Stainless Steel in Acidic Potassium Permanganate Decontamination

作　　者：张鹏[1] 罗源军[1] 龚敏[1] 林修洲[1] 王兆华[1] 李新跃[1] 

机构地区：[1]四川理工学院材料腐蚀与防护四川省高校重点实验室,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2011年第6期621-624,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：四川省教育厅重大培育项目(09ZX003)

摘　　要：在酸性高锰酸钾去污体系中,采用单因素试验和正交试验,以深度腐蚀速率作为评价指标,探讨了酸洗中溶液组分、温度、流速及时间等因素对不锈钢腐蚀行为的影响规律;通过极差与方差分析,给出了各因素的主次顺序及其清洗去污过程中的优化结果。结果表明:各因素对腐蚀速率的影响大小依次是时间、流速、温度、KMnO4浓度及HNO3浓度;腐蚀速率最小时的去污工艺为:HNO3的质量分数20%、KMnO4的质量分数0.02%、温度70℃、静态去污及酸洗时间12h。Taking the depth corrosion rate as the evaluation index,the factors are discussed such as solution components,temperature,flow velocity and time on the influencing law of stainless steel corrosion behavior by single factor experiment and orthogonal experiment in decontamination system of acidic permanganate solution.Through the analysis of poor and variance,the primary and secondary orders of various factors and the optimization results in cleaning decontamination process are given.The results implies that order of various factors to the influence of the corrosion rate is time,flow velocity,temperature,the concentration of KMnO4 and the concentration of HNO3.The optimum decontamination process condition of minimum corrosion rate is: mass percentage of HNO3 20%.KMnO4 0.02%,temperature 70℃,time of static decontamination and cleaning 12 hours.

关 键 词：1Cr18Ni9Ti不锈钢 酸洗去污 正交试验 金属腐蚀 

分 类 号：TL94[核科学技术—辐射防护及环境保护]