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
李新梅1, 张忠文1, 邹 勇2, 魏玉忠3
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作者单位：(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)
中文关键字：EPR； 晶间腐蚀； Super304H钢； TP304H钢
英文关键字：EPR; intergranular corrosion; Super304H steel; TP304H steel
中文摘要：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。
英文摘要：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 microstructure of Super304H steel and TP304H steel. Therefore, no chromium depleted zone is formed. Super304H steel and TP304H steel have excellent intergranular-corrosion resistance.