|
|
|
| CERIUM CONVERSION COATINGS FORMED ONANODIZED ALUMINUM BY CATHODIC ELECTROLYSIS |
| ;Di Li;Jiuqing Li |
| 北京科技大学材料学院腐蚀系 |
|
|
|
|
Abstract Cerium-rich conversion coatings were deposited on p orous film of anodized auminoum by cathodic electrolysis in a solution containin g 1 g/L CeCl3·7H2O and 10 ml/L H2O2.X-ray photoelectron spectroscopy (X PS),scanning electron microscopy (SEM),X-ray diffraction (XRD) and energy disper sion analyzer of X-ray (EDAX) have been used to study these cerium-containing co nversion coatings.The results revealed that the microstructure of the cerium con version coatings was closely related to the porous structure of anodized film an d changed gradually with electrolysis time and cathodic current density.The coat ing being of an amorphous nature,predominately consisted of 3-valent-state ceriu m compound,and was up to about 140nm after one-hour cathodic electrolysis.
|
|
Received: 31 January 2000
|
|
|
[1]HintonBRW ,ArnottDR ,RyanNE .Theinhibitionofaluminumcorrosionbyceriumcations[J].MetalsForum,1984,7(4):211-217
[2]LiGQ ,LiD .Thestudyofrareearthconversioncoatingsforaluminumalloys[J].J .MaterialsEngineering,1998,(8):1-5(李国强,李荻.铝合金稀土转化膜的研究进展[J].材料工程,1998,(8):1～5)
[3]LiGQ .Thestudyofrareearthceriumconversioncoatingsformedonaluminumalloysbyelectrochemicalprocess.Ph.D .disser tation,UniversityofScience&TechnologyBeijing,Beijing,2000.6(李国强.铝合金稀土铈电化学转化膜的研究[D].北京科技大学博士学位论文,2000,6)
[4]KellerF ,HunterMS ,RobinsonDLetal.Structuralfeaturesofoxidecoatingsonaluminum[J].J .theElectrochemicalSociety,1953,100(9):411～419
[5]EplingWS ,MounktKC ,HoflundBG .Surfacecharacterizationstudyofthechemicalalterationofanair-exposedpolycrystal linetinfoilduringH -atomexposures[J].AppliedSurfaceScience,1998,134:187～193
[6]ShyuJZ ,OttoK ,WatkinsWLH ,etal.CharacterizationofPd/γ-auminoacatalystscontainingceria[J].J .Catalysis,1988,114:22～33
[7]RenshawTA .Astudyofporestructuresonanodizedauminoum[J].J.ElectrochemicalSociety,1961,108(2):185～191
[8]PatermarakisP ,LenasP ,KaravassilisCh,PapayiannisG ,KineticksofgrowthofporousanodicAl2O3filmsonAlmetal[J].ElectrochemicalActa,1991,36(3/4):709～725
[9]GaoYX ,RenJJ ,NingFY .SurfaceTreatmentofAluminumAlloys[M ].Beijing:MetallurgyIndustryPress,1991,16-46(高云霞,任继嘉,宁福元.铝合金表面处理[M].北京:冶金工业出版社,1991,16～168)
[10]DavenportAJ,IsaacsHS ,KendigMW .XANESinvestigationoftheroleofceriumcompoundsascorrosioninhibitorsforalu minum[J].CorrosionSci.,1991,32(5/6):653～663
[11]AldykiewiczAJ,IsaacsHS ,DavenportAJ .Studiesofformationofcerium-richprotectivefilmsusingX -rayabsorptionnear-edgespectroscopyandrotatingdiskelectrodemethods[J].J.Electrochem.Soc.,1996,143(1):147～154
[12]XuGX .RareEarch[M ].PartI ,Beijing:MetallurgyIndustryPress,1996.(徐光宪等编.稀土[M ].北京:冶金工业出版社,1996) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
