新型高性能Mo-,2-FeB-,2-基金屬陶瓷的制備及性能研究.pdf

1、武漢科技大學碩士學位論文新型高性能MoFeB基金屬陶瓷的制備及性能研究姓名：徐金龍申請學位級別：碩士專業(yè)：材料學指導教師：潘應君20060414武漢科技大學碩士學位論文AbstractAlongwiththedevelopmentofthespeedupofmachinesandtheamountoftheapparatuswhichrunningunderthestrictcircumstancesofhightemperaturea

2、ndcorrosion，thepropertiesofabrasiveresistancecometobeallimportanttechnicalissueBeinthissituation，ternaryboridebasedcermetsappearsTernaryboridebasedcermetshaveexcellentpropertiesofmechanical，abrasiveresistance，corrosivere

3、sistanceandhightemperatureresistanceSoitiswidelyusedinindustryandagricultureandplaysaveryimportantroleTheinstitutionofthepropertiesofboridehadstartedsincetheendof80sTheinstitutionofternaryboridebasedcermetsisinminorityco

4、untriesintheworldsuchasJapanandAmericaTheyfocusedinthesinteringpropertiesandknewveryfewaboutthemechmfismofsinteringIn—situreactionsinteringisaninnovativetechniquetoproduceternaryboridebasedcermetsMechanismofM02FeB2basedc

5、ermetsandtherelationshipwithitspropertiesarediscussedinthisarticleByXRDanalyse，SEMandEDXanalyseandstudiedtheinfluenceofthefactors’effectofpropertiesandmicrostmctureofMo／FeB2basedcermetsThefactorsincludetheratioofMo／B，the

6、amountofcarbon，parametersofsintering，themethodofmolding，thebinder，themethodofdryingandtheheattreatmentetcAndobtainedthebesttechniqueThepropertiessuchashiIghhardness，excellentpropertiesofabrasiveresistance，corrosiveresist

7、ance，ph37stealandmechanicalofternaryboridecermetsareintroducedbriefly(alsotested，analysedanddiscussed)hereItisdemonstratedthatit(M02FeB2basedcermets)hassuperiormicrostructureandpropertieswhiletheMo／Bequalsto11，andthemicr

8、ostructuremadpropertiesimprovedalotwhenCrandNipowderat25percentandCeOpowderat05percent，Theoptimumcarbonaddition(0912％wt)eliminatedpores，whichresultedinanimprovementintransversempturestrengthBytheprocessUsingtheparaffinto

9、takethecementingagent，ballmillingitunderthealcoholprotectionofthehygrometricstatefor30hoursatthespeedof320r／Min，thenvacuurodrying，andtakingshapesonthestaticpressure，vacuumsinteringatthetemperatureof1280。Candusingolefinas

10、thebinderwecangainthemostexcellentpropertiesandmicrostmctureoftemaryboridebasedcermetsAndM02FeB2basedcermetshavesupernalhighhardnessandfairpropertiesofabrasiveresistance，corrosiveresistanceItalsohaveexcellentpropertiesof