FV520B stainless steel is an important material for compression turbine impellers. Its corrosion resistance at high temperatures is critical for the manufacturing and service reliability management of impellers. Therefore, this study investigated the electrochemical corrosion of FV520B stainless steel in an acetic acid solution bearing hydrogen bromine from 130 to 200 °C by potentiodynamic polarisation, electrochemical impedance and corrosion morphology observation. Active corrosion peaks were evident, and the corrosion current densities increased with the increase of the concentration of hydrogen bromine and temperature. However, the breakdown potential first shifted into noble value and then decreased with the further rise in temperature, where the maximum value was at 175 °C. EIS analysis and corrosion morphology revealed that the presence of pitting potential peak is possibly attributed to the competition between the attack of bromine ion and the growth of a surface oxide film under high-temperature water.
JuPFZuoYTangJL. Corrosion behaviour of 316L stainless steel in PTA slurry. Corros Eng Sci Technol. 2013; 48 (3): 207–210.
2.
PahlavanSMoazenSTajiI. Pitting corrosion of martensitic stainless steel in halide bearing solutions. Corros Sci. 2016; 112: 233–240.
3.
KanekoMIsaacsHS.Pitting of stainless steel in bromide, chloride and bromide/chloride solutions. Corros Sci. 2000; 42 (1): 67–78.
4.
NewmanRC.The dissolution and passivation kinetics of stainless alloys containing molybdenum-II. Dissolution kinetics in artificial pits. Corros Sci. 1985; 25 (5): 341–350.
5.
AdeliMGolozarMARaeissiK.Pitting corrosion of SAF2205 duplex stainless steel in acetic acid containing bromide and chloride. Chem Eng Commun. 2010; 197 (11): 1404–1416.
6.
IsaoSKazumitsuM.Corrosion behavior of SUS 329J1 stainless steel in acetic acid solutions. Key Eng Mater. 1987; 28: 3289–3298.
7.
SekineIMasukoASenooK.Corrosion behavior of AISI 316 stainless steel in formic and acetic acid solutions. Corrosion. 1987; 43 (9): 553–560.
8.
YamamotoKHosoyaK.Corrosivity of Br− and Cl− on duplex stainless steel. Mater Sci Eng. 1995; 198 (1-2): 239–243.
9.
WangJGGaoY.Study on corrosion behaviors of the PTA plant in halogen. Appl Mech Mater. 2012; 217-219: 496–500.
10.
TurnbullARyanMWillettsA. Corrosion and electrochemical behaviour of 316L stainless steel in acetic acid solutions. Corros Sci. 2003; 45 (5): 1051–1072.
11.
ChengXLiXYangL. Corrosion resistance of 316L stainless steel in acetic acid by EIS and Mott-Schottky. J Wuhan Univ Technol. 2008; 23 (4): 574–578.
12.
ZhuRLZhangLTWangJQ. Stress corrosion crack propagation behavior of elbow pipe of Nuclear grade 316LN stainless steel in high temperature high pressure water. J Chin Soc Corros Prot. 2018; 38 (1): 54–61.
13.
YinKJQiuSYTangR. Corrosion behavior of super-austenitic stainless steel Al-6XN in supercritical water. J Chin Soc Corros Prot. 2012; 32 (5): 375–380.
14.
ZhuFZhangLTangR. Corrosion behavior of austenitic 304NG stainless steel in supercritical water at 550°C/25 MPa. At Energy Sci Technol. 2009; 43 (6): 518–522.
15.
HanEHYuJQWuXJ. Corrosion mechanisms of stainless steel and nickel base alloys in high temperature high pressure water. Acta Metall Sinica. 2010; 46 (11): 1379–1390.
16.
BoschRWVankeerberghenMB.In-pile electrochemical tests of stainless steel under PWR conditions: interpretation of electrochemical impedance spectroscopy data. Electrochim Acta. 2007; 52 (27): 7538.
17.
ChengXQFengZCLiCT. Investigation of oxide film formation on 316L stainless steel in high-temperature aqueous environments. Electrochim Acta. 2011; 56 (17): 5860–5865.
18.
MontemorMFFerreiraMGSHakikiNE. Chemical composition and electronic structure of the oxide films formed on 316L stainless steel and nickel based alloys in high temperature aqueous environments. Corros Sci. 2000; 42 (9): 1635–1650.
19.
SunHWuXQHanEH.Effects of temperature on the oxide film properties of 304 stainless steel in high temperature lithium borate buffer solution. Corros Sci. 2009; 51 (12): 2840–2847.
20.
Fernández-DomeneRMBlasco-TamaritEGarcía-GarcíaDM. Effect of temperature on the passive state of alloy 31 in a LiBr solution: passivation and Mott-Schottky analysis. Mater Corros. 2015; 66 (11): 1305–1314.
21.
XuJWuXQHanEH.The evolution of electrochemical behaviour and oxide film properties of 304 stainless steel in high temperature aqueous environment. Electrochim Acta. 2012; 71: 219–226.
22.
IsaoSHatakeyamaSNakazawaY.Effect of water content on the corrosion behaviour of type 430 stainless steel in formic and acetic acids. Electrochim Acta. 1987; 32 (6): 915–920.
23.
LeiXWFuAQFengYR. Influence of HAc concentration and temperature on the electrochemical corrosion behavior of super 13Cr stainless steel. Corros Prot. 2017; 38 (9): 676–682.
24.
LiangBGongJMTuSD.Corrosion behavior of AISI316L and SAF2205 stainless steels in acetic acid solution containing Br ion. Mater Mech Eng. 2006; 30 (1): 56–59.
25.
TerachiTYamadaTMiyamotoT. Corrosion behavior of stainless steels in simulated PWR primary water-effect of chromium content in alloys and dissolved hydrogen. J Nucl Sci Technol. 2008; 45 (10): 975–984.
26.
TzanevaBRFachikovLBRaicheffRG.Effect of halide anions and temperature on initiation of pitting in Cr–Mn–N and Cr–Ni steels. Corros Eng Sci Technol. 2006; 41 (1): 62–66.
27.
SamRTahaFAbd El-MalakAM.Corrosion and inhibition of stainless steel pitting corrosion in alkaline medium and the effect of Cl− and Br− anions. Appl Surf Sci. 2005; 242 (1-2): 114–120.
