铬对铸铁耐高温浓硫酸腐蚀的影响  

Effects of Cr on the Corrosion Resistance of Cast Iron in Concentrated Sulphuric Acid at Elevated Temperature

作　　者：高岩[1,2] 王焕庭[1,2] 王富岗 

机构地区：[1]华南理工大学 [2]大连理工大学

出　　处：《铸造》1997年第6期12-15,28,共5页Foundry

摘　　要：以三种不同含铬量的铸铁为试验材料，通过实验室静态全浸试验、工厂现场挂片试验、电化学试验，并辅以金相观察，探讨了合金元素Ｃｒ的加入对铸铁耐高温浓硫酸腐蚀性能的响影规律和作用机理，分析了溶液状态、介质浓度、温度等因素对铸铁耐蚀性的影响，为实际硫酸生产设备用材的进一步改进提供了理论依据。The rule and mechanism on the effect of Cr content on the corrosion resistance of cast iron containing 3 kinds of Cr addition level have been investigated by using fully immersion test,on site plate hanging,electrochemical test and metallographic observation,and the influence of solution state,solution concentration and temperature on the corrosion resistance of cast iron containing different Cr content was also analysed,which provides scientific basis for improving the properties of alloys of H 2SO 4 production equipment.

关 键 词：腐蚀速率 高温 浓硫酸 低铬铸铁 耐蚀性 

分 类 号：TG143[一般工业技术—材料科学与工程]