添加劑對陽極氧化鋁膜性能的影響研究

1、大連理工大學碩士學位論文添加劑對陽極氧化鋁膜性能的影響研究姓名：董春曉申請學位級別：碩士專業(yè)：化學工程指導教師：李淑英20090601添加劑對陽極氧化鋁膜性能的影響研究ResearchontheInfluenceofAdditivestothePropertyofAnodicAluminumOxideFilmsAbstractAnodicAluminumOxide(AAO)Filmshadagoodprospectofapplicati

2、oninarchitecture，decorationaviationeta1Combinedwiththecurrentinvestigationonadditives，theinfluenceofrareearthsaltsandorganicsadditivesandtheircompositeswerestudiedonimprovingthepropertiesofAAOfilms，especiallyontheircorro

3、sionresistanceInthispaper，fivesingleadditivessuchasCe(S04)2，La2(S04)3，oxalicacid，citricacidandglycerolwereaddedintothesulfuricacidelectrolyterespectivelyAndtheporousAAOfilmswerefabricatedintheseelectrolytesbythetradition

4、alanodizingtechnologyThethickness，hardnessandanticorrosionpropertyoftheobtainedAAOfilmswereexaminedCe(S04)2wasselectedastheoptimalsingleadditiveanditsbestaddingquantityWas1mmol／L，accordingtothecorrosionresistancetestsBes

5、ides，theoptimaloxidationtimeWasdeterminedaslhbytherulesofthethickness，hardnessandanticorrosionpropertyofAAOfilms，formedinsulfuricacidsolutionwithandwithouttheceriumsaltadditiveThreetypicalorganicadditives，suchasoxalicaci

6、d，citricacidandglycerolwereaddedintothesulfuricacidelectrolytecontainingceriumsalt，respectivelyThethickness，hardnessandcorrosionresistanceoftheobtainedAAOfilmswereexamined，andthecitricacidwasselectedaStheoptimalorganicad

7、ditive，whichhadthebestsynergisticeffectwithceriumsalt，anditsbestaddingquantityWasO6mol／L，accordingtothecorrosionresistancetestsThecompositeadditivesofCe(804)2andorganicswerebeRerthansingleadditivesinimprovingthepropertie

8、sofAAOfilmsBesides，current—timecurvesofanodizingprocessandtheelectrochemicalimpedancespectroscopy(EIS)indicatedthat：bothsingleandcompositeadditivescouldn’tchangetheanodizingprocesses，buttheyincreasedthethicknessofbarrier

9、layer，andaccordinglyimprovedtheanticorrosionpropertyofAAOfilmsHowever，aftercompositeadditives，thecorrosionmechanismofAAOfilmschangedinNaCIsolution111emacromoleculecomplexesblockedupthepores，whichimprovedtheanticorrosionp

10、ropertyofAAOfilmsfurtherlySubsequently，thepropertyofthethreetypesofAAOfilms，whichwereformedintheelectrolytesofsulfuricacid，sulfuricacidceriumsalt，sulfuricacidceriumsaltcitricacidrespectivelywerecomparedThroughchemicaletc