摘要
应用动电位法、三氯化铁浸泡试验方法比较了未钝化和硝酸钝化处理的304和2304不锈钢在Cl-介质中的耐点蚀性能,运用金相显微镜、SEM观察了不锈钢的组织和钝化膜的形貌,对304和2304不锈钢在Cl-介质中不同的耐点蚀行为进行了分析。结果表明2304不锈钢在Cl-介质中的耐点蚀性能明显优于304不锈钢,特别是钝化处理的2304不锈钢点蚀击穿电位可达到1139 mV。
In this paper, potentiodynamic and chemical method were used to compare the pitting resistance of 304 and 2304 stainless steel in chloride medium with nitric passivating treatment and not. Their metallurgical structure and the surface morphology of passivating film have been observed by metallomicroscope and SEM. The pitting resisting action in chloride medium of 304 and 2304 stainless steel were analyzed. The results show that the corrosion resistance of 2304 stailess steel is obviously better than 304 stainless steel, especially its pitting potential can reach 1139 mV after passivating treatment.
出处
《压力容器》
北大核心
2007年第5期1-4,共4页
Pressure Vessel Technology
关键词
钝化膜
Cl^-介质
耐蚀行为
passivating film
chloride medium
corrosion resistance
