EPR法在评价304L不锈钢晶间腐蚀敏感性中的应用
Susceptibility of Intergranular Corrosion of 304L Stainless Steel Evaluated by EPR
摘 要
采用电化学动电位再活化法(EPR)研究了不同固溶处理和敏化处理状态的304L不锈钢晶间腐蚀行为。结果表明, EPR法可灵敏并定量评价304L不锈钢的晶间腐蚀敏感性; 测量时, 推荐采用1.0 mol/L H2SO4+0.1 mol/L KSCN混合溶液; 304L晶间腐蚀敏化度随固溶处理时间的延长而减小, 随敏化处理时间的延长而增大。
304L不锈钢
晶间腐蚀
敏化度
EPR
304L stainless steel
intergranular corrosion
DOS
Abstract
The degree of sensitization(DOS) in 304L stainless steel was studied by electrochemical potentio-kinetic reactivation(EPR) test. DOS of specimens reduced as the time of solution treatment increased and increased with the time of the sensitizing treatment. Mixed solution of 1.0 mol/L H2SO4 and 0.01 mol/L KSCN is recommended as the testing solution 304L. EPR technique provides a sensitive, quantitative and nondestructive method for detecting the degrees of sensitization.
中图分类号 TG174
所属栏目 试验研究
基金项目
收稿日期 2011/10/28
修改稿日期
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备注方可伟, 工程师, 硕士,
引用该论文: FANG Ke-wei,LIU Fei-hua,LI Yan. Susceptibility of Intergranular Corrosion of 304L Stainless Steel Evaluated by EPR[J]. Corrosion & Protection, 2012, 33(10): 867
被引情况:
【1】熊佳龙,张根元,耿都都,薛岩, "在H2SO4+NaCl电解液中采用EPR法评价304不锈钢晶间腐蚀敏化度的变化",腐蚀与防护 36, 63-67(2015)
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参考文献
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【2】Majidi A P, Stricher M A. Potentiodynamic reaction method for detecting sensitization in AISI304 and 304L stainless steels[J]. Corrosion, 1984, 40(9):393-408.
【3】Cihal V. A potentiokinetic reactivation method for predicting the SCC and IGSCC sensitivity of stainless steels and alloys[J]. Corrosion Science, 1980, 20:737-744.
【4】Aydogdu G H, Aydinol M K. Determination of susceptibility to intergranular corrosion and electrochemical reactivation behaviour of AISI 316L type stainless steel[J]. Corrosion Science, 2006(48):3565-3583.
【5】Charke W L, Carlson D C. Nondestructive measurement of sensitization of stainless steel:Relation to high temperature stress corrosion behavior[J]. Materials Performace, 1980, 19(3):16-23.
【6】Akshi M, Kawarnoto T. The effect of molybdenum addition on SCC susceptibility of stainless steels in oxygenated high temperature water[J]. Corrosion Engineering, 1978, 27(4):165-171.
【7】方智, 张玉林, 吴荫顺, 等. 电化学动电位再活化法评价308L不锈钢的晶间腐蚀敏感性[J]. 腐蚀科学与防护技术, 1996, 8(2):87-93.
【8】Cihal V. Advances in the potentiodynamic reactivation method[J]. Werkstoffe und Korrosion, 1986, 37(11):587-591.
【9】Scully J R, Kelly R G. An electrochemical test for detecting the intergranular corrosion susceptibility of a duplex stainless steel[J]. Corrosion, 1986, 42(9):537-542.
【10】Frangini S, Mignone A. Modified electrochemical potentiokinetic reactivation mothod for detecting sensitization in 12% Cr ferritic stainless steels[J]. Corrosion, 1992, 48(9):715-726.
【11】Duffault F, Pouzet J P, Lacombe P. Potentistaitic study of structural modifications caused in a Ni-Cr-Fe alloy by heat treatment at 650 ℃[J]. Corrosion Science, 1966, 6(2):83-85.
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