脈沖等離子體電解氧化機(jī)理及工藝研究.pdf

1、中南民族大學(xué)碩士學(xué)位論文脈沖等離子體電解氧化機(jī)理及工藝研究姓名：孔中華申請學(xué)位級(jí)別：碩士專業(yè)：@指導(dǎo)教師：孫奉?yuàn)?0030101STUDYONTHEMECHANISMTEHNOLOGYOFPULSEPLASMAELECTROLYZEOXIDATIONABSTRACTMicroarcoxidation(MAO)technologyhasparticularadvantagestothesurfacemodificationoflightm

2、etalssuchasAlTiMgitsalloys.H2O2weregeneratedbyMAO.TheelectrolyteofMAOwasnopollutionuptoecologystard.Fthegoodelectricinsulationerosionresistancewearresistanceofthisoxidationfilmlowcostitseasinessofobtainingmicroarcoxidati

3、onfilmtherearemanyscholarsstudyingfIt.microarcoxidationgrowthmechanismwasdiscussedbythispaper.ThentheinfluenceofelectrolyteproptioningontheperfmanceofthecoatfilmofcastaluminumTiwasimpledeffectiveelectrolyteproptioningswh

4、ichincludes3gLNa3H5O72H2O5gLNa2SiO31gLNaOH1gLNa2WO4fora140mcoatfilmsand4gL(NaPO3)65gLNa2SiO31gLNaOH2gLNa2WO4foramicrohardnessupto1204HV0.5wereobtained.TheinfluenceofEDTAandSDBSonmicrohardnessandthethicknesswereinvestigat

5、ed.theeffectofdutyratioofDCpulsepowersourceonthemicrohardnessandthethicknessoftheoxidationfilmandthegrowthofoxidationfilmwithaconclusionthata3035%dutyratioundera1.5KHzfrequencywillleadtothebestresultandthelestdutyratioof

6、15%wasprovidedbythepowersourceunderthefrequence1.5KHzhastheleasttime.TheproductionofwaveinDCpulsepowersourceanddissymmetryalternatingpulsepowersourceintheprocessofmicroarcoxidationofcastaluminumandTiwasexplainedwithaconc

7、lusionthatdissymmetryalternatingpulsepowersourcehasmoreeffectiveworkonthethicknessandhardnessofoxidationfilmthanDCpulsepowersourceAtlastthethermalshockanderosionresistanceofoxidationfilmonthesurfaceofcastaluminumandTiwer