非金属离子对S31603不锈钢表面锈蚀的影响  

Effect of non-metallic ions on surface rust of S31603 stainless steel

作　　者：黄恒波 朱玉萍 王勇智 杨勇 张婧 杨坤 唐志红[3] HUANG Hengbo;ZHU Yuping;WANG Yongzhi;YANG Yong;ZHANG Jing;YANG Kun;TANG Zhihong(Shanghai Shengsheng Chemical Technology Co.,Ltd.,Shanghai 200333,China;Ironmaking Plant,Panzhihua Steel&Vanadium Co.,Ltd.,Panzhihua,Sichuan 617000,China;University of Shanghai for Science and Technology,School of Materials and Chemistry,Shanghai 200093,China)

机构地区：[1]上海圣升化工科技有限公司,上海200333 [2]攀钢集团攀枝花钢钒有限公司炼铁厂,四川攀枝花617000 [3]上海理工大学材料与化学学院,上海200093

出　　处：《有色金属材料与工程》2023年第3期56-66,共11页Nonferrous Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(51971148)。

摘　　要：S31603不锈钢具有优异的耐腐蚀性能,广泛应用于化工、沿海设施等领域。在使用过程中,长期经历内部应力、苛刻环境的腐蚀作用。其中,水溶液中的离子对S31603不锈钢的耐腐蚀性能有着重要影响。通过分析锈蚀S31603不锈钢的微观形貌、元素组成及化学状态等,研究非金属离子对其表面锈蚀的影响。结果表明,NO^(3-)、NO^(2-)、SO_(4)^(2-)对S31603不锈钢锈蚀起关键作用,Cl^(-)起辅助作用,且锈蚀主要发生在S31603不锈钢与水溶液长期接触的界面。通过对锈蚀表面进行物质鉴定,发现锈蚀表面含有Fe_(2)(SO_(4))_(3)、FeSO_(4)、CrO_(2)等多种化合物。S31603 stainless steel has excellent corrosion resistance and is widely used in fields such as chemical engineering and coastal facilities.In the process of use,it undergoes the corrosive effects of internal stress and harsh environments for a long time.Among them,the ions in the aqueous solution have a significant impact on the corrosion resistance of S31603 stainless steel.By analyzing the micro morphology,elemental composition,and chemical state of rusted S31603 stainless steel,the effect of non-metallic ions on its surface corrosion was studied.The results showed that NO^(3-),NO^(2-)and SO_(4)^(2-)play a key role in the rust of S31603 stainless steel,Cl-plays an auxiliary role,and the corrosion mainly occurs at the interface between S31603 stainless steel and aqueous solutions in the long term.Through identification on the rusted surface,and it is found that the rusted surface contains various compounds such asFe_(2)(SO_(4))_(3),FeSO_(4),CrO_(2),etc.

关 键 词：S31603不锈钢 锈蚀产物 非金属离子 

分 类 号：TG247[金属学及工艺—铸造]