The aim of the present work was to study the influence of surface finishing on the corrosion resistance of AISI 304 stainless steel samples. Samples were submitted to lathe-turning, milling, lapping and grinding. Roughness parameters were determined by confocal laser scanning microscopy (CLSM). The corrosion resistance was evaluated using potentiodynamic polarisation curves and the corrosion morphology was assessed using CLSM and scanning electron microscopy. The results showed that the surface state had a remarkable influence on the corrosion behaviour of the samples, especially surface imperfections, whereas the roughness parameters did not directly correlate with the corrosion resistance.
QiaoY. X.ZhengY. G.OkaforP. C. and KeW.: ‘Electrochemical behaviour of high nitrogen bearing stainless steel in acidic chloride solution: effects of oxygen, acid concentration and surface roughness’, Electrochim. Acta2009542298–2304. doi: 10.1016/j.electacta.2008.10.038
2.
LuoH.LiX. G.DongC. F. and XiaoK.: ‘Degradation of austenite stainless steel by atmospheric exposure in tropical marine environment’, Corros. Eng. Sci. Technol.201348221–229. doi: 10.1179/1743278212Y.0000000070
3.
JegdićB.DražićD. M. and PopićJ. P.: ‘Open circuit potentials of metallic chromium and austenitic 304 stainless steel in aqueous sulphuric acid solution and the influence of chloride ions on them’, Corros. Sci.2008501235–1244. doi: 10.1016/j.corsci.2008.01.012
4.
MacdonaldD. D.: ‘Passivity – the key to our metals-based civilization’, Pure Appl. Chem.19997951–978.
5.
KovacJ.KosecT. and LegatA.: ‘Monitoring behaviour of 304 stainless steel under constant tensile loading by electrochemical impedance spectroscopy’, Corros. Eng. Sci. Technol.201247478–483. doi: 10.1179/1743278212Y.0000000029
6.
PeredaM. D.KangK. W.BonettoR.LlorenteC.BilmesP. and GervasiC.: ‘Impact of surface treatment on the corrosion resistance of ASTM F138-F139 stainless steel for biomedical applications’, Proc. Mater. Sci.20121446–453. doi: 10.1016/j.mspro.2012.06.060
7.
ShibataT. and KokuboK.: ‘Effect of surface polishing on SCC susceptibility of sensitised type 304 stainless steel’, Corros. Eng. Sci. Technol.201449156–159. doi: 10.1179/1743278214Y.0000000159
8.
LeeS. M.LeeW. G.KimY. H. and JangH.: ‘Surface roughness and the corrosion resistance of 21Cr ferritic stainless steel’, Corros. Sci.201263404–409. doi: 10.1016/j.corsci.2012.06.031
9.
BursteinG. T. and VinesS. P.: ‘Repetitive nucleation of corrosion pits on stainless steel and the effects of surface roughness’, J. Electrochem. Soc.2001148B504–B516. doi: 10.1149/1.1416503
10.
SasakiK. and BursteinG. T.: ‘The generation of surface roughness during slurry erosion-corrosion and its effect on the pitting potential’, Corros. Sci.1996382111–2120. doi: 10.1016/S0010-938X(96)00066-2
11.
HongT. and NagumoM.: ‘Effect of surface roughness on early stages of pitting corrosion of type 301 stainless steel’, Corros. Sci.1997391665–1672. doi: 10.1016/S0010-938X(97)00072-3
12.
ZuoY.WangH. and XiongJ.: ‘The aspect ratio of surface grooves and metastable pitting of stainless steel’, Corros. Sci.20024425–35. doi: 10.1016/S0010-938X(01)00039-7
13.
BursteinG. T. and PistoriusP. C.: ‘Surface roughness and the metastable pitting of stainless steel in chloride solutions’, Corrosion199551380–385. doi: 10.5006/1.3293603
14.
ShahryariA.KamalW. and OmanovicS.: ‘The effect of surface roughness on the efficiency of the cyclic potentiodynamic passivation (CPP) method in the improvement of general and pitting corrosion resistance of 316LVM stainless steel’, Mater. Lett.2008623906–3909. doi: 10.1016/j.matlet.2008.05.032
15.
HilbertL. R.Bagge-RavnD.KoldJ. and GramL.: ‘Influence of surface roughness of stainless steel on microbial adhesion and corrosion resistance’, Int. Biodeter. Biodegr.200352175–185. doi: 10.1016/S0964-8305(03)00104-5
16.
LebanM. B.MikyškaC.KosecT.MarkoliB. and KovačJ.: ‘The effect of surface roughness on the corrosion properties of type AISI 304 stainless steel in diluted NaCl and urban rain solution’, J. Mater. Eng. Perform.2014231695–1702. doi: 10.1007/s11665-014-0940-9
17.
BurkertA.KlapperH. S. and LehmannJ.: ‘Novel strategies for assessing the pitting corrosion resistance of stainless steel surfaces’, Mater. Corros.201364675–682. doi: 10.1002/maco.201206749
18.
PeyreP.CarboniC.ForgetP.BerangerG.LemaitreC. and StuartD.: ‘Influence of thermal and mechanical surface modifications induced by laser shock processing on the initiation of corrosion pits in 316L stainless steel’, J. Mater. Sci.2007426866–6877. doi: 10.1007/s10853-007-1502-4
19.
KlapperH. S.BurkertA.BurkertJ.JehmannJ. and VillalbaA. L.: ‘Influence of surface treatments on the pitting corrosion of type 304 stainless steel by electrochemical noise measurements’, Corrosion201167075004-1–075004-13. doi: 10.5006/1.3613641
20.
LiT.LiuL.ZhangB.LiY.YanF.TaoN. and WangF.: ‘Passive behavior of a bulk nanostructured 316L austenitic stainless steel consisting of nanometer-sized grains with embedded nano-twin bundles’, Corros. Sci.201485331–342. doi: 10.1016/j.corsci.2014.04.039
21.
IbrahimM. A. M.KorablovS. F. and YoshimuraM.: ‘Corrosion of stainless steel coated with TiN, (TiAl)N and CrN in aqueous environments’, Corros. Sci.200248815–828. doi: 10.1016/S0010-938X(01)00102-0
22.
SerdarM.ŽuljL. V. and BjegovićD.: ‘Long-term corrosion behaviour of stainless reinforcing steel in mortar exposed to chloride environment’, Corros. Sci.201369149–157. doi: 10.1016/j.corsci.2012.11.035
23.
LiY.ZhangS.HeY.ZhangL. and WangL.: ‘Characteristics of the nitrided layer formed on AISI 304 austenitic stainless steel by high temperature nitriding assisted hollow cathode discharge’, Mater. Des.201464527–534. doi: 10.1016/j.matdes.2014.08.023
24.
TurnbullA.MingardK.LordJ. D.RoebuckB.TiceD. R.MottersheadK. J.FairweatherN. D. and BradburyA. K.: ‘Sensitivity of stress corrosion cracking of stainless steel to surface machining and grinding procedure’, Corros. Sci.2011533398–3415. doi: 10.1016/j.corsci.2011.06.020
25.
GhoshS. and KainV.: ‘Microstructural changes in AISI 304L stainless steel due to surface machining: Effect on its susceptibility to chloride stress corrosion cracking’, J. Nucl. Mater.201040362–67. doi: 10.1016/j.jnucmat.2010.05.028
