|
|
|
| CORROSION BEHAVIOR OF Fe-10Cr NANOCRYSTALLINE COATINGS ( I ) THE PASSIVE BEHAVIOR OF Fe-10CrNANOCRYSTALLINE COATINGS IN ACIDIC SOLUTION |
| ;; |
| 哈尔滨工程大学材料科学与化学工程学院 |
|
|
|
|
Abstract Fe-10Cr nanocrystalline ( nc ) coating with the grain size about 20 nm to 30 nm was fabricated on a glass substrate by magnetron sputtering technique.The corrosion behavior of the Fe-10Cr nc coating and its counterpart alloys were investigated in 0.05 mol/L H2SO4+0.25 mol/L Na2SO4 solution by polarization curves.The results showed that the active dissolution of Fe-10Cr nc coating was accelerated as comparing with its counterpart Fe-10Cr cast alloy.For Fe-10Cr nc coating,it had a higher tendency to passive in acid solution and the passive current density was lower as compaed with its counterpart alloy.The further average active energy measurement,EIS measurement and Mott-Schottky analysis revealed that the average active energy for the dissolving reaction of the Fe-10Cr nc coating was higher.This is attributed to the higher defect density on the nc coating.On the other hand,even though the same n type semiconductor passive film was formed on both nc sputtering coating and its counterpart alloy,but Cr was easier to accumulate in the passive film of Fe-10Cr nc coating and the donor density in its passive film was lower.The higher passive ability of the nc sputtering coating was attributed to the more Cr accumulated in the passive film and the higher chemical stability of the passivity film.
|
|
Received: 26 July 2005
|
|
|
[1]Tjong S C,Chen H.Nanocrystalline materials and coatings[J].Ma-ter.Sci.Eng.R,2004,45:1-88
[2]Zeiger W,Schneider M,Scharnweber D,et al.Corrosion behaviour ofa nanocrystalline FeAl8 alloy[J].Nanostructured Materials,1995,6:1013-1016
[3]Mariano N A,Souza C A C,Oliviera MF,et al.Corrosion resistanceof amorphous and nanocrystalline Fe-M-B(M=Zr,Nb)alloys[J].Mater.Sci.Forum,2000,861:343-346
[4]Oblonsky L J,Ryan M P,Isaacs H S.In situ determination of thecomposition of surface films formed on Fe-Cr alloys[J].J.Electro-chem.Soc.,1998,145:1922-1932
[5]Kirchheim R,Heine H,Fischmeister H,et al.The passivity of iron-chromium alloys[J].Corros.Sci.,1989,29:899-917
[6]Mitrovic-Scepanovic V,MacDougall B,Graham MJ.Nature of pas-sive films on Fe-26Cr alloy[J].Corros.Sci.,1984,24:479-490
[7]Haupt S,Strehblow HH.A combined surface analytical and electro-chemical study of the formation of passive layers[J].Corros.Sci.,1995,37:43-54
[8]Maurice V,Yang W P,Marcus P.XPS and STMstudy of the passivefilms formed on Fe-22Cr(110)single-crystal surfaces[J].J.Electrochem.Soc.,1996,143:1182-1200
[9]Mischler S,Vogel A,Mathieu HJ,et al.The chemical composition ofthe passive film on Fe-24Cr and Fe-24Cr-11Mo studied byAES,XPS and SIMS[J].Corros.Sci.,1991,32:925-944
[10]Olsson C O A,Landolt D.Passive films on stainless steels—chemis-try,structure and growth[J].Electrochim.Acta,2003,48:1093-1104
[11]Wang F H.The effect of nanocrystallization on the selective oxida-tion and adhesion of Al2O3scales[J].Oxid.Met.,1997,48:215-224
[12]Wang F H.Oxidation resistance of sputtered Ni3(AlCr)nanocrys-tallized coating[J].Oxid.Met.,1997,47:247-258
[13]Intrui R B,Szklarska-Smialowska Z.Localized corrosion of nano-crystalline 304 type stainless steel films[J].Corrosion,1992,48:398-403
[14]Atkins P W.Physical Chemistry[M].Oxford:Oxford UniversityPress,1994
[15]Tong W P,Tao N R,Wang Z B,et al.Nitriding iron at lower tem-perature[J].Science,2003,299:686-688
[16]Cao C N.The Principles of Corrosion Electrochemistry[M].Bei-jing:Chemical Industry Press,2004(曹楚南.腐蚀电化学原理[M].北京:化学工业出版社,2004)
[17]Meng G Z,Li Y,Wang F H.Electrochemical behavior of Fe-20Crnanocrystalline coatings[J].J.Chin.Soc.Corros.Prot.,2006,26(1):11-18(孟国哲,李瑛,王福会.Fe-20Cr纳米涂层的电化学行为[J].中国腐蚀与防护学报,2006,26(1):11-18)
[18]Cabrera N,Mott N F.Rep.Prog.Phys.,1948-1949,12:163
[19]Hakiki N E,Boundin S,Rondot B,et al.The electronic structure ofpassive films formed on stainless steel[J].Corros.Sci.,1995,37:1809-1822
[20]Simoes A M P,Ferrira M G S,Rondot B,et al.Study of passivefilms formed on AISI 304 stainless steel by impedance measure-ments and photoelectrochemistry[J].J.Electrochem.Soc.,1990,137:82-87
[21]Ahn J S,Kwon S H.Effects of solution temperature on electronicproperties of passive film formed on Fe in pH8.5 borate buffer so-lution[J].Electrochim.Acta,2004,49:3347-3353 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
