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 Posted: Mon 2:08, 06 Dec 2010 Post subject: tory burch Crystallization temperature on physical |
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Dental crystallization temperature on the physical properties of glass
mSoc, 1996.78 (5) ,1217-1222 [6] GrossrnanDG. _J:. JAmCeramSoc. 1972,55 (9) :446-4 pelican. [7] MV Swain, GUO Jing-Kun. Structure and properties of ceramics [M Science Press, 1999.22524 day [8] JamesP [J]. AdvCeram. 1982,4 (1) :1-29. [9] J ~ cksonKA. If] ProgSolidStateChemt1967t4 (1): 5380. Author: sac YAN Jun (1972 a),[link widoczny dla zalogowanych], male. Jiaozuo,[link widoczny dla zalogowanych], Henan people,[link widoczny dla zalogowanych], in the PhD. Hubei Medical University in 1998, received medical degree. School of Stomatology,[link widoczny dla zalogowanych], Fourth Military Medical University now,[link widoczny dla zalogowanych], studying under Professor Wang Zhongyi, in dental materials. Influences0fcrystallizati0ntemperatureOilphysicalpropertiesofmica-basedglass-ceramicsfordentalrestorationsQINYan-iun, WANGZhong-yi, TIANfie-rflo. , CA0Xiao-gang (1StomatologicalCollege, FourthMilitaryMedica [University.Xj 'an710038China; 2.StateKeyLaboratoryofNewCeramicsandFineProcessingtTsinghuaUniversity.Beijing100084.China) Abstract; AccordingtotherequirementsofdentalrestorativematerialstK} (NMgO-MgF-Sit) 2glass-ceramicssystemwaschosentomakeamachinabletetrasiIic/efluormicaglass-ceramicsusedfordentalCAD/CAMrestorateensandtheinfluenc ~ softhreedifferentcrystallizationtemperature8onitsphys/calpropertieswereinvestigated. Differentialthermalanalysis (DTA). X-rayd/ffraetometer (XRD) andscanningelectronmicroscopy (SEM) wereusedtoobservethecrystaIl / zationbehavior, crystalphasesandmicrostructuresoftheglass-ceramics. PhysicalpropertiesoItheglass-ceramicswerecompared. Theresultssh0wthatimprovingcrystallizationtem-peratureCallincreasethegrainsizesofthemicaandimprovethethree-pointbendinsstrengthandfracturetoughnessoftheglass-ce-ramics. VickershardOCSSandtheindexofbrittlenessdecreasewithincreasingoftemperature. butdensityisnotatfeciedbytempera-turechanges. Keywords: gl ~ ss-ceramics; tetraslllclcfluormica; indexofbrittleness \
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