30CrMnSiA、30CrMnSiNi2A在模拟海洋环境中的腐蚀行为对比研究
Comparative Study on Corrosion Behavior of 30CrMnSiA and 30CrMnSiNi2A in Simulated Marine Environment
朱利敏 1赵连红 1王英芹 1刘元海 1何卫平 1王浩伟1
作者信息
- 1. 中国特种飞行器研究所 结构腐蚀防护与控制航空科技重点实验室,荆门 448035
- 折叠
摘要
通过开展30CrMnSiA、30CrMnSiNi2A两种高强度钢在模拟海水环境下的浸泡试验,采用电化学阻抗谱(EIS)测试、动电位极化曲线(PDP)测试、腐蚀产物及腐蚀表面形貌观察、表面三维轮廓及腐蚀产物分析,研究了 30CrMnSiA、30CrMnSiNi2A两种高强度钢在人工海水溶液中的腐蚀行为.结果表明:30CrMnSiA、30CrMnSiNi2A两种高强度钢的电化学行为相似,阳极曲线表现出活性溶解特征,阴极过程以氧还原反应为主,腐蚀产物分别是α-FeOOH物质、γ-FeOOH物质、α-Fe2O3 物质和Fe3O4 物质.在人造海水介质环境下 30CrMnSiNi2A的腐蚀速率大于 30CrMnSiA,同时得出高强度钢中Ni、Cr元素能够有效提高材料耐腐蚀性能.
Abstract
The artificial seawater immersion experiments simulating the submerged zone of seawater,combined with electrochemical impedance spectroscopy(EIS)test,Potentiodynamic polarization(PDP)test,corrosion products and corrosion surface morphology observation,three-dimensional surface profile and corrosion products analysis,were used to study the corrosion behavior of 30CrMnSiA and 30CrMnSiNi2A for amphibious aircraft landing gear in the simulated marine environment.The results show that:the electrochemical behavior of 30CrMnSiA and 30CrMnSiNi2A steels is similar,the anodic curve exhibits active dissolution characteristics,and the cathodic process is dominated by oxygen reduction reaction.The corrosion products mainly consisted of α-FeOOH,γ-FeOOH,α-Fe2O3 and Fe3O4,Corrosion rate of 30CrMnSiNi2A in the environment of artificial seawater is greater than 30CrMnSiA.At the same time,Ni and Cr elements in high-strength steel can effectively improve the corrosion resistance of materials.
关键词
高强度钢/人工海水/腐蚀产物/电化学行为Key words
high-strength steel/artificial seawater/corrosion products/electrochemical behavior引用本文复制引用
出版年
2024
NETL
NSTL
万方数据