CurrentResearchStatusofLowTemperatureSinteringGlassceramic.docVIP

CurrentResearchStatusofLowTemperatureSinteringGlassceramic KJing-ruiZYa-binZYing-na （NorthChinaUniversityofScienceandTechnologyYishengCollege，TangshanHebei063009,China） 【Abstract】Microcrystallineglassisakindandarchitecturalglass.Whenpreparingbioglassmaterial,lowsinteringtemperatureinmicrocrystallineglasscauseslowdegreeofdensification,differenceofbondstrengthbetweenparticles,even“slag”problems;Thus,theresearchprogressofbioactiveglass-ceramicmaterialbylowtemperaturesinteringhasbeenreviewed.Weareanalyzingthestatusquo,thecrystallizationmechanismandexpectation. 【Keywords】Lowtemperaturesintering;Microcrystallineglass;Crystallization;Expectation Introduction Microcrystallineglassplaysaroleinmechanicalproperties,biologicalactivityofbonereplacementandrepairmaterials.Peoplewanttofindasinteringtemperature,whichwillnotaffectthepracticalactivityofmicrocrystallineglass,canachievethematerialsneededtofitinmorewaysagain.Thepresentstudyinsomeofthemicrocrystallineglassshowedthatsinteringtemperaturelimitsclinicalapplication,thoughithasgoodbiologicalactivity,mechanicalpropertiesandmachinability.Andwecansee,exploringthelowtemperaturesinteringmicrocrystallineglassisverypromising. 1Mainglasssystemsresearchoflowtemperaturesinteringglass-ceramics Microcrystallineglasscanformstablechemicalbondingwithbonetissue,formagoodhydroxyapatiteimplantsitelayerrapidly,andithasgoodaffinity,non-toxic.Itishelpfulforhuman. Chenlei,etal1,showthelowtemperaturesinteringA/W.ZTA.InthesystemofSiO2-CaCO3-Mg(NO3).6H2O-NH4H2CaF2-CaF2basedontheuseofstretchformingprocess,obtainsynchronizationofZTAmaterialandHAPunderlowtemperaturesintering. Rong-guangsunandothers2discoverythesystemof3ZnO2-2B2O3andAl2O3produceschemicalreaction,theformationofZnAl2O4while3Z2Bsintersatlowtemperatureof850950,precipitatingthemaincrystalphase.Atthesametime3ZnO2-2B2O3willbedensification,the3ZnO2-2B2O3glassandAl2O3systemmicrowavedielectricpropertiescanbeimproved. IsabelleDenryothers3studytheinfluenceofsinteringtemperaturedifferentratiobetweenCaandAlinglasssystemofSiO2-Al2O3-P2O5-MgO-Na2O-K2O-CaO-CaF2.Asitshowedthatthebestsinteringtemperaturerange775to900,whiletheratioreaches98.990.04%and91.310.10%. 2Studyonlowtemperaturesinteringglass-ceramicswithcrystallizationandmechanism YuBing,kaimingliang,GuShouren4usedifferentialthermalanalysis(DTA).ZrO2ontheglasscrystallizationactivationenergywereanalyzedandtheinfluenceofZrO2causingglasscrystallizationcrystallizationindexincreasingweresurveyedbasedonZrO25-6. Wecandescribeageneralinquiryframeworkroutine. TheJohnson-Mehl-mostlyAwamic(JMA)equationismostlyapproved. lna（1-x）ktn（） Amongthem:x-Crystalintegralnumberwhenthemomentisuptot. a-Heatingrate. n-Crystalgrowthindex. k-Crystallizationkiicsparameters.ItcanbeexpressedasAmheniustypeofequation k=ANexp（E/RT）（） Amongthem:E-Crystallizationactivationenergy R-Theuniversalgasconstant T-Absolutetemperature A-Constant N-Numberofcrystalnucleus 3Disadvantagesandexpectations Thoughresearchoflowtemperaturesinteringglass-ceramicshasbeenusedinclinical,itisstillabigdifferenceandinadeqasanewkindofbonesubstitutionmaterialsparedwithnaturalboneunion7-8： Firstofall,glass-ceramicmechanicalstrengthisinsufficientbythelowtemperaturesinteringmethod.Biologicalglass-ceramicsinfracturestrength,toughness,biologicalactivityandpracticalitycanbefurtherimproved； Then,lowtemperaturesinteringglass-ceramicbiologicalperformanceisnotstable.Mostoflowtemperaturesinteringglass-ceramicscontainsiliconpounds,affectingthefunctionofcellsandtissuesaround,andislikelytoaffectionbalanceinthebody. Overingtheshortings,givingfullplayabouttheexcellentpropertiesoflowtemperaturesinteringglass-ceramicsisaresearchanddevelopmenttrendbetweenmaterialscientistsandmedicalworkers.Microcrystallinematerialsareofgreatsignificancewiththedevelopmentof3Dprinting9. 參考文獻 孟雷,陳奇.生物微晶玻璃的最新進展J.硅酸鹽通報,xx(3):60-63. 田清波.成核劑對SiO2-Al2O3-MgO-F系微晶玻璃析晶的影響J.稀有金屬材料與工程,xx,38(2):1124-1127. BRAUERDS,ANJUMMN,MNEIMNEM,etal.Fluoride-containingbioactiveglass-ceramicsJ.JournalofNon-CrystallineSolids,xx,358:1438-1442. KANSALI,GOELA,TULYAGANOVDU,etal.StructuralandthermalcharacterizationofCaO-MgO-SiO2-P2O5-CaF2glassesJ.JournaloftheEuropeanCeramicSociety,xx,39-46. 韓陳,郭興忠,楊輝,等.含氟和磷Li2O-Al2O3-SiO2系玻璃的析晶機理J.硅酸鹽學報,xx(6):717-722. 史培陽,姜茂發(fā),劉承軍,等.C