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

作　　者：朱利敏 赵连红 王英芹 刘元海 何卫平 王浩伟 ZHU Li-min;ZHAO Lian-hong;WANG Ying-qin;LIU Yuan-hai;HE Wei-ping;WANG Hao-wei(Structure Corrosion Protection and Control of Aviation Science and Technology Key Laboratory,China Special Vehicle Research Institute,Jingmen 448035)

机构地区：[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

出　　处：《环境技术》2024年第4期147-154,165,共9页Environmental Technology

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-Fe_(2)O_(3)物质和Fe_(3)O_(4)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。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 3oCrMnSiA 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-Fe0OH,γ-Fe0OH,α-Fe_(2)O_(3),and Fe_(3)O_(4),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 

分 类 号：TG172[金属学及工艺—金属表面处理]