液相等離子體電解碳氮共滲技術(shù)研究.pdf

1、燕山大學(xué)碩士學(xué)位論文液相等離子體電解碳氮共滲技術(shù)研究姓名：李杰申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：沈德久20051001燕山大學(xué)工學(xué)碩士學(xué)位論文AbstractInthisdissertation，plasmaelectrolysiscarburising，nitridingandcarbonitridingtechniqueinsolutionwasappliedtoimprovethewearresistanceandantic

2、orrosionpropertiesofsteelforQ235steelatopenenvironmentandgivenelectrolytePlasmaelectrolysissaturationtechniqueinsolutionwasappliedforsurfacemodifiedofQ235steelnlefeasibilityofrapidcarburisingnitridingandcarbonitridingsat

3、urationWasdiscussedandalsothestabilityofelectrolysissystem11”thicknessofsaturationlayerwasmeasuredandanalyzedthephasecomposition，morphologycomposition，Roughness，microhardnessfromsaturationlayerintomatrixinteriorThewearre

4、sistanceandanticorrosionpropertiesofsamplesweremeasuredTheresultsindicatedthatappliedDCpulsepowerinformamideandaqueoussolutionofureacouldnotachievecarburising、nitddinglayerinQ235steelHowereveTheresultsaresatisfactoryinet

5、hanolamineelectrrolyteInspecificallyelectrolyte，voltageandtreatedtimeweretheimportantparameterstealizeplasmaelectrolysissaturationThesaturatedlayerthicknessincreasedwithvoltageandtreatedtimeandthemaximalthicknesswas75gm1

6、11esaturationlayerWascompactestwhenthetreatedvoltagewas150VandtimeWas75SThemaximalmicmhardnessofsaturationlayerwasHV770，whichWasthe45timesofmatrixThesurfaceroughnessincreasedwiththeincreasedoftreatedtimeandvoltageThecarb

7、onitridingsaturationlayerwerecomposedby0t—FecN、7FecN、Fe3C、FesC2and￡Fe2—3NThewearresistanceiSmorethan3timesofmatrixThematrixnaturalcorrosionpotentialwas930mVwhilethetreatedsamplewas550mVKeywordsaturation；plasmaelectrolysi