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1、Researchonstrengthening-tougheningofceramicsbymetalelementsrecoveredfromelectroplatingsludgeJIAHusheng1,2,LICaili1,WANGShuhua1,2,LIUXuguang1,XUBingshe1,2(1.KeyLaboratoryofMaterialsInterfaceScienceandEngineering,MinistryofEducation,TaiyuanUniversityofTechnology,TaiyuanShanxi030024;2.Coll
2、egeofMaterialsScienceandEngineering,TaiyuanUniversityofTechnology,TaiyuanShanxi030024.)Abstract:Inthispaper,co-precipitationcompoundprecursors-hydrothermalprocessingwasemployedtosynthesizeNi/Cu/Al2O3/ZrO2compositepowder,andZrO2-basedcompositeceramicswasprepared.Thetechnologyrecycledthem
3、etalofnickel,copperandaluminumfromsludge,andtherecoveryrateofnickelwasupto95.5%.ThepropertyofZrO2-basedcompositeceramicswasimprovedbecauseoftheexistenceofnickelandcopperparticles.ThefracturetoughnessofNi/Cu/Al2O3/ZrO2compositeceramicswas8.52MPa·m1/2andthecompressivestrengthwas51MPa,show
4、ingincreaseby2.54timesand1.5times,respectively,comparedwiththoseofpureZrO2ceramics.Keywords:C.Recycling;A.composites;E.mechanical8Afterthetreatmentofthewastewaterfromnickel-platingindustrybyalkalinemethod,Ni(OH)2isgeneratedanddepositedinsoilaselectroplatingsludge.Themetalelementsinsludg
5、ecaneasilytransferintofoodchainandbringharmtohumanhealth.Electroplatingsludgeisoftenhigherinnickelcontentthanmetal-gradeore,andthereforeisacheapsecondaryrenewableresource.Besides,iftheelectroplatingsludgeisReceived：Sep27,2011;Accepted:Dec5,2011Jiahusheng：jia_husheng@126.com,wsh73.studen
6、t@sina.comFundedbytheInternationalcooperationProgramofShanxiprovince(NO.2009081046).ProgramforChangjiangScholarandInnovativeResearchTeaminUniversity（IRT0972）nottreatedcorrectly,seriouspollutionofheavymetalsandwasteofresourceswouldberesulted.Thecompositetougheningofceramicsmaterialsisone
7、ofimportantapproachesforimprovingceramicsmaterialsproperties.Linetal.[1]preparedAl2O3-basedcompositeceramicswithafracturetoughnessof6.1MPa·m1/2,whichshowedanincreaseof2.32MPa·m1/2comparedtothatofpureAl2O3ceramicspreparedunderthesameconditions.Sarkaretal.[2]synthesizedAl2O3-5mol
