STUDY ON THE PROTECTION POTENTIALAGAINST PITTING CORROSION OF A3 STEEL AND 304 SS

J Chin Soc Corr Pro

2001, Vol. 21

Issue (2): 70-75 DOI:

Research Report

Current Issue | Archive | Adv Search

STUDY ON THE PROTECTION POTENTIALAGAINST PITTING CORROSION OF A3 STEEL AND 304 SS

;;

北京化工大学材料科学与工程学院

Download:

PDF(146KB)
Export: BibTeX | EndNote (RIS)

Abstract Two methodssimulated occluded cell and simulated occluded solutionhave been developed to determine the protection potential aga inst pitting of A3 steel and 0Cr18Ni9 stainless steel.They are based on the theo ry that the pitting protection potential(EP) is actually the transition po tential of the direction of current between the occluded cell and the external s urface(ET).The ET of 304 SS in 0.5　mol·L-1 NaCl solution is in the range of 220 mV to 440 mV(SCE), the ET of A3 steel in 0.01 mol ·L-1 NaCl solution(pH=12) is in the range of 390～670 mV, the lowest of which can be considered as cathode protection potential(EP).The E P of 304 SS determined with “cyclic” potentiodynamic polarization method is included in the ET with above methods.As for electrochemical protection ag ainst pitting, if the potential of the external surface is controlled below the EP,the activepassive transition will occur inside the occluded cell, so the pitting will be stifled.

Key words: partial corrosion transition potential occluded cell protection potential

Received: 03 January 2000

ZTFLH:	TQ050.91
	TG174.41

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors

Cite this article:

. STUDY ON THE PROTECTION POTENTIALAGAINST PITTING CORROSION OF A3 STEEL AND 304 SS. J Chin Soc Corr Pro, 2001, 21(2): 70-75 .

URL:

https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I2/70

[1]ZuoJingyi.Stresscorrosioncracking[M ].Xi′an :Xi′anTrafficUniversityPress,1985 ,1- 82(左景伊 .应力腐蚀破裂 [M ].西安 :西安交通大学出版社 ,1985 ,1- 82 )
[2 ]NewmanRC ,ProcterRPM .Stresscorrosioncracking[J].Brit.Corrosion .J,1990 ,4(2 5 ) :2 5 9
[3]LiuYouping .Relationshipbetweenoccludedcellandprotectionpotentialoflocalizedcorrosion[J].JournalofBeijingUniversityofChemicalTechnology ,1996 ,2 (2 3) :6 6 - 72 .(刘幼平 .局部腐蚀的保护电位与闭塞电池之间的内在关系 [J].北京化工大学学报 ,1996 ,2 (2 3) :6 6 - 72 )
[4 ]YangWu ,GuRuixiang ,LiQiaoyan ,WuJingxian .Localizedcorrosionofmetal[M ].Beijing :ChemicalIndustryPress ,1995 ,10 9.(杨武 ,顾睿祥 ,黎樵焱 ,武京先 .金属的局部腐蚀 [M].北京 :化学工业出版社 ,1995 ,10 9)
[5 ]XuChunchun ,LiuYouping ,ZhangXiaobo ,ZhaoXuhui.Astudyonthecathodeprotectionpotentialagainstpittingcorrosion[J].Electrochemistry ,1999,2 (5 ) :15 2 - 15 6 .(许淳淳 ,刘幼平 ,张晓波 ,赵旭辉 .孔蚀阴极保护电位测试方法的研究 [J].电化学 ,1999,2 (5 ) :15 2 - 15 6 )
[6 ]WuYinshun .Studyofmetalliccorrosion[M ].Beijing :MetallurgicalIndustryPress ,1993,118(吴荫顺 .金属腐蚀研究方法 [M ].北京 :冶金工业出版社 ,1993,118)
[7]WeiYinshun ,HaoLing ,YangZhongying .Anapproachtothepittingsteadygrowthof 18- 8austeniticstainlesssteelunderu niformcorrosioncondition[J].JournalofChineseSocietyforCorrosionandProtection ,1988,8(2 ) :113- 119(魏宝明 ,郝凌 ,杨忠英 .用研究均匀腐蚀的方法探讨不锈钢孔蚀的稳定发展 [J].中国腐蚀与防护学报 ,1988,8(2 ) :113-119)
[8]LiuYouping ,XiaNianyoung ,ZhaoXuhui.Asignificanceoftheprotectionpotentialagainstpittingcorrosion[J].JournalofChi neseSocietyforCorrosionandProtection ,1997,17(4 ) :2 41- 2 45(刘幼平 ,夏念勇 ,赵旭辉 .孔蚀保护电位剖析 [J].中国腐蚀与防护学报 ,1997,17(4 ) :2 41- 2 45 )

[1]	Chunchun Xv; Lijie Yue; Weizhen Ouyang. EFFECT OF CATHODIC POLARIZATION ON CHEMICAL AND ELECTROCHEMICAL STATES INSIDE OCCLUDED CELLS OF LOCALIZED CORROSION OF CAST IRON IN ALKALINE SOLUTION[J]. 中国腐蚀与防护学报, 2005, 25(5): 295-298 .
[2]	. Chemical Changes Within Occluded Cell for Localized Corrosion of Iron Artifacts in Chloride Solution[J]. 中国腐蚀与防护学报, 2004, 24(6): 364-367 .
[3]	LIU Youping XIA Nianyong ZHAO Xuhui (Beijing University of Chemical Technology; Beijing 100029). ON SIGNIFICANCE OF THE PROTECTION POTENTIAL AGAINST PITTING CORROSION[J]. 中国腐蚀与防护学报, 1997, 17(4): 241-247.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed