Control and mitigating crevice corrosion demand a thorough understanding of the prevailing chemistry conditions inside the crevice. To match and predict the dynamics in chemistry conditions occurring inside a crevice appropriately, good crevice models necessitate extensive experimental data. This paper presents the accurate determination of the ionic species in the minute volume of crevice solution and redox potential measurements in fabricated simulated crevices of different dimensions/geometry in different stainless steel alloys. Crevice geometries fabricated from carbon steel (CS) 106 B and stainless steel (SS) 316 materials were exposed to varying water chemistry conditions in a static autoclave at high temperatures. The change in pH, conductivity, ionic concentrations, electrochemical potential and effectof corrosion inhibitors inside the crevice were monitored after exposure in an alkaline medium with and without chloride. Bulk solution pH showed a reduction in alkalinity, conductivity and enhancement in anion concentrations. About 58 times increase in Cl− was measured.
MillettPJFentonJM. A review of PWR steam generator crevice impurity concentration mechanisms. Proceedings of the Steam Generator Heat Exchange Conference; 1990; Toronto, Canada.
2.
FontanaMG.Corrosion engineering. Singapore: McGraw-Hill International editions; 1987.
3.
SedriksAJ.Corrosion of stainless steels. New York (NY): John Wiley & Sons Ltd; 1996.
4.
EtorA.Electrochemical measurement of crevice corrosion of type AISI 304 stainless steel. Saskatoon (SK): University of Sackatchewan; 2009.
5.
LaycockNJStewartJNewmanRC.The initiation of crevice corrosion in stainless steels. Corros Sci. 1997; 39: 1791–1809. doi: 10.1016/S0010-938X(97)00050-4.
6.
BettsAJBoultonLH.Crevice corrosion: review of mechanisms, modelling, and mitigation. Br Corros J1993; 28: 279–296. doi: 10.1179/000705993799156299.
7.
HeppnerKLEvittsRWPostlethwaiteJ.Effect of the crevice gap on the initiation of crevice corrosion in passive metals. Corrosion. 2004; 60: 718–728. doi: 10.5006/1.3287850.
IjsselingFP.Electrochemical methods in crevice corrosion testing: report prepared for the European federation of corrosion working party ‘physico-chemical testing methods of corrosion: fundamentals and applications,’. Br Corros J. 1980; 15: 51–69. doi: 10.1179/000705980798275544.
10.
ChoKAbdulsalamMIPickeringHW.The effect of electrolyte properties on the mechanism of crevice corrosion in pure iron. J Electrochem Soc. 1998; 145: 1862–1869. doi: 10.1149/1.1838568.
11.
KellyRGYuanJWeyantCM. Applications of capillary electrophoresis in corrosion science and engineering. J Chromatogr A. 1999; 834: 433–444. doi: 10.1016/S0021-9673(98)01090-5.
12.
MankowskiJSzklarska-SmialowskaZ.Studies on accumulation of chloride ions in pits growing during anodic polarization. Corros Sci1975; 15: 493–501. doi: 10.1016/0010-938X(75)90015-3.
13.
WolfeRCWeilKGPickeringHW.Electrochemical probes for metal/electrolyte system characterization during crevice corrosion. J Phys Chem B. 2004; 108: 14298–14304. doi: 10.1021/jp040045c.
14.
OldfieldJWSuttonWH.Crevice corrosion of stainless steels: I. A mathematical model. Br Corros J. 1978; 13: 13–22. doi: 10.1179/000705978798358671.
SongFM.A mathematical model developed to predict the chemistry and corrosion rate in a crevice of variable gap. Electrochim Acta. 2011; 56: 6789–6803. doi: 10.1016/j.electacta.2011.05.083.
17.
VuilleminBOltraRCottisR. Consideration of the formation of solids and gases in steady state modelling of crevice corrosion propagation. Electrochim Acta. 2007; 52: 7570–7576. doi: 10.1016/j.electacta.2006.12.036.
18.
EngelhardtGRMacdonaldDDMillettPJ.Transport processes in steam generator crevices—I. general corrosion model. Corros Sci1999; 41: 2165–2190. doi: 10.1016/S0010-938X(99)00039-6.
19.
MomeniMWrenJC.A mechanistic model for oxide growth and dissolution during corrosion of Cr-containing alloys. Faraday Discuss. 2015; 180: 113–135. doi: 10.1039/C4FD00244J.
20.
SaywellLGCunninghamBB.Determination of iron: colorimetric o-phenanthroline method. Ind Eng Chem Anal Ed.1937; 9: 67–69. doi: 10.1021/ac50106a005.
21.
SchikorrVG.Uber die Reaktionen Zwischen Eisen, Seinen Hydroxyden Und Wasser. Z Elektrochem. 1929; 35: 65–70.
22.
WuLGuoDLiM. Inverse crevice corrosion of carbon steel: Effect of solution volume to surface area. J Electrochem Soc. 2017; 164: C539–C553. doi: 10.1149/2.0511709jes.
23.
HornusECRodr'guezMA.Effect of temperature on the crevice corrosion resistance of Ni-Cr-Mo alloys as engineered barriers of nuclear repositories. Procedia Mater Sci2012; 1: 251–258. doi: 10.1016/j.mspro.2012.06.034.
24.
SchlegelMLMartinFFenartM. Corrosion of carbon steel in clay compact environments at 90°C: Effect of confined conditions. Corros Sci2021; 184: 109368. doi: 10.1016/j.corsci.2021.109368.
25.
ZhaoJMZuoY.Corrosion behaviour in simulated solutions within pits and crevices on carbon steel. Corros Eng Sci Technol. 2007; 42: 203–206. doi: 10.1179/174327807X214789.
26.
SuzukiTYamabeMKitamuraY.Composition of anolyte within pit anode of austenitic stainless steels in chloride solution. Corros J Sci Eng. 1973; 29: 18–22. doi: 10.5006/0010-9312-29.1.18.
27.
XuQPangXGaoK.Effects of anions on corrosion behaviour of carbon steel in simulated groundwater in China. Corros Eng Sci Technol. 2017; 52: 84–89. doi: 10.1080/1478422X.2017.1294356.
28.
NashBKKellyRG.The Use of Ion chromatography for the study of localized corrosion. J Electrochem Soc1992; 139: L47–L48. doi: 10.1149/1.2069440.
TurnbullA.The solution composition and electrode potential in pits, crevices and cracks. Corros Sci1983; 23: 833–870. doi: 10.1016/0010-938X(83)90014-8.
31.
TsurutaTMacdonaldDD.Measurement of pH and redox potential in boric acid/lithium hydroxide buffer solutions at elevated temperatures. J Electrochem Soc. 1981; 128: 1199–1203. doi: 10.1149/1.2127593.
32.
RebakRB.Mechanisms of inhibition of crevice corrosion in Alloy 22. MRS Online Proc Libr2007; 985: 804. doi: 10.1557/PROC-985-0985-NN08-04.
33.
RebakRB. Factors affecting the crevice corrosion susceptibility of alloy 22. 2005.
34.
EvansKJRebakRB.Passivity of Alloy 22 in concentrated electrolytes. Effect of temperature and solution composition. In: FrankelGSIsaacsHSScullyJrSinclairJD, editors. Corrosion Science: A Retrospective and Current Status in Honor of Robert P. Frankenthal. Pennington (NJ): The Electrochemical Society, Inc; 2002. p. 344–354.
35.
DunnDSCragnolinoGAYangL. Localized corrosion susceptibility of Alloy 22. 2003.
