Super304H钢和TP304H钢晶间腐蚀敏感性研究  

Study on Susceptibility to Intergranular Corrosion of Super304H and TP304H Stainless Steel

作　　者：李新梅[1] 张忠文[1] 邹勇[2] 魏玉忠 

机构地区：[1]山东电力研究院,山东济南250002 [2]山东大学材料液态结构及遗传性教育部重点实验室,山东济南250061 [3]华电邹县发电有限公司,山东济宁273522

出　　处：《热加工工艺》2011年第6期5-7,共3页Hot Working Technology

基　　金：山东电力集团公司重点科技项目(2007A-47)

摘　　要：利用电化学动电位再活化法(EPR)测试了Super304H钢和TP304H钢的晶间腐蚀敏感性。结果表明,Super304H钢和TP304H钢的再活化率在同一个数量级上。Super304H钢和TP304H钢组织中都没有明显的Cr23C6析出相,所以未出现明显的基体贫铬现象,因此二者具有优良的耐晶间腐蚀性能。The susceptibility to intergranular corrosion of Super304H steel and TP304H steel was investigated by double loop electrochemical potentiodynamic （EPR）. The experimental results indicate that, the re-activating rate （Ra） of Super304H steel and TP304H steel is the same in quantity. There is no obvious Cr23C6 precipitate in the microstrueture of Super304H steel and TP304H steel. Therefore, no chromium depleted zone is formed. Super304H steel and TP304H steel have excellent intergranular-corrosion resistance.

关 键 词：EPR 晶间腐蚀 SUPER304H钢 TP304H钢 

分 类 号：TG142.73[一般工业技术—材料科学与工程]