学科分类
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8 个结果
  • 简介:与Pb涂的Ninanoparticles(Zr,Ti)O3(PZT)被一个大音阶的第五音胶化方法并且在situ反应综合。并且他们的结构,氧化抵抗,和电磁的性质被调查。X光检查衍射模式(XRD)展出了那描绘到Ni的掺杂的阶段的小数量(哦)2从对待氨的Ninanoparticles和与PZT涂的对待氨的Ninanoparticles被检测。在与水的氨被预先对待以后,PZT涂层层在厚度是更多的制服和大约10nm。与非对待的的相比,与PZT涂的对待氨的Ninanoparticles的氧化抵抗被大约66桰獯獩改进

  • 标签: 电磁波传播 性质 PZT 衍射模式 NI 高频率
  • 简介:Novelcore-shellhydroxyapatite/chitosanbiocompositenanospheresweresynthesizedinamultipleemulsion.Themultipleemulsionwasaw/o/wemulsion,madeofdiammoniumphosphatesolutionasaninneraqueousphase,cyclohexaneasanoilphase,andcalciumnitratesolutionandchitosansolutionasanouteraqueous.Theformingmechanismofcore-shellspheresandtheinfluenceoftemperatureonthemorphologyofthenanosphereswereinvestigated.Thediameteroftheresultingcore-shellnanosphereswas100-200nmandthethicknessofthechitosanshellwasabout10nm.Anditconcludedthatatdifferentreactiontemperaturethemorphologiesoftheproductswouldbechanged.Thecore-shellnanosphereshavepotentialapplicationsforthedevelopmentofnewbiomedicalmaterials.

  • 标签: 壳聚糖溶液 生物复合材料 羟基磷灰石 纳米球 核壳 结构表征
  • 简介:Theindustrialmanufactureprocessesofthreekindsofrollcoreusedductileironshavebeeninvestigatedviasystematicalexperiments.EffectsoftheratioofC/Si,pigiron,nodularizerandalloyingmethodonthemicrostructureandmechanicalpropertiesoftheheavysectionductileironhavebeenanalyzed.IthasbeenfoundthatwhentreatedwithRE-MgplusSb,highqualitynodularcastingscanbeproducedevenifmuchantispheroidizingalloyelementsareincludedinthepigiron.ThealloyelementSbplayedanimportantroleinthecontrolofgraphitemorphology.

  • 标签: 球墨铸铁 力学性能 显微组织 化学成分 复合轧辊 离心铸造
  • 简介:Mechanicalpropertiesofepoxyresinwereinvestigatedbyaddingcore-shellelasticparticles(CSEP).Theresultsindicatedthatoptimizedcore-shellratiowas60/40andtheloadingvolumeofCSEPwas10phr(perhundredpartsofepoxyresinbyweight).Theimpactstrengthofmodifiedsystemsincreasedapparentlywiththedecreaseofcoresizes.However,theshearingstrengthchangedgentlywiththeparticlesizes.CSEPwithlightlycrosslinkedrubberycoreshowedmoreeffectivenessontoughnessthanothers.Withsolutionblending,CSEPcouldbedispersedinepoxymatrixwell,andthemorphologiesofdispersedrubberdomainswerecontrolledperfectlybyCSEPwhosestructurewaspredesigned.Acavitation-shearingbandtoughnessmechanismwasobservedfromtheSEMmicrographsoffracturesurface.Italsowasfoundthatthedeformingtemperature(DT)ofmodifiedepoxydidnotdeclineapparently.

  • 标签: 甲基丙烯酸甲酯 聚乙烯 增韧剂 环氧树脂 DGEBA DDM