学科分类
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5 个结果
  • 简介:Determiningtheinterfacialpropertiesofthermalbarriercoatings(TBCs)isimperativefortheirdurabilityevaluationandfurtherimprovements.Aceramiccoating(topcoat)andaNiCoCrALYbondcoatwereatmospheric-plasma-sprayed(APS)onastainlesssteelsubstrate.Amodifiedthree-pointbendingtestwasadoptedtoinitiateandpropagatethetopcoat/bondcoat(TC/BC)interfacialcrack.Afteracompletedelamination,thefracturesurfaceswereexaminedbyanopticalmicroscope,whichshowsthatthecrackingplanewasmerelyontheTC/BCinterface.Basedontheexperimentalresultsofload–displacementandcracklength–displacement,thestrainenergyreleaserateGforcrackpropagationwascalculated,andtheaveragedmagnitudewas77.1J/m2.Repeatableresultshaveindicatedthatthemethodcanbeusedfortheevaluationofinterfacialfracturetoughnessinthermalbarriercoatingsandothermulti-layerstructures.

  • 标签: Thermal BARRIER coatings Three-point BENDING INTERFACIAL
  • 简介:由于它的突出的电子性质,黑磷(BP)为下一代的optoelectronic设备被看作有希望的材料。在这个工作,设备基于BP/MXene(Zrn+1CnT2,T=O,F,哦,n=1,2)货车derWaals(vdW)heterostructures经由第一原则的计算被设计。Zrn+1Cn有适当工作功能的T2作文在垂直方向导致与BP的欧姆的接触的形成。低Schottky障碍在BP/Zr2CF2,BP/Zr2公司2H2,BP/Zr3C2F2,和BP/Zr3C2O2H2bilayers,并且BP/Zr3C2O2甚至展出欧姆的接触行为。BP/Zr2公司2是有type-II乐队排列的半导体的heterostructure,它便于电子洞对的分离。BP/Zr2公司2能有效地经由一个垂直电场被调节,并且BP被预言在0.4V/电场从施主经历转变到领受人。在这个工作检验的BP/MXeneheterostructures的万用的电子性质在电子学为应用加亮他们的有希望的潜力。

  • 标签: 电子性质 金属碳化物 货车 界面 垂直方向
  • 简介:AvisualizedinvestigationwascarriedoutontheeffectofthedivergingangleonthebubblemotionandinterfacialbehaviorinaVenturi-typebubblegenerator.Itwasfoundtwoorthreelargevortexesformedinthedivergingsection,resultinginstrongreentrantjetflowinthefrontofthebubblesorslugsrushingoutofthethroat.Thejetflowinreturnbumpsintotheongoingbubblesorslugs,leadingtostronginteractionbetweenthegasandliquidphases.Thediverginganglehassignificantinfluenceonthereentrantflowprocessandtheperformanceofthebubblegeneratoraswell.Increasingthedivergingangleresultsinthereentrantflowmovingfurtherforwardtotheupstreamandintensifiestheinteractionbetweenthetwophases.Asaconsequence,thebreakuporcollapseofbubblesbecomesmoreviolent,wherebyfinerbubblesaregenerated.Assuch,thereentrantflowstronglylinkstotheperformanceoftheVenturichanneltakenasabubblegenerator,andthatamoderateincreaseinthediverginganglecanimproveitsperformancewithoutadditionalincreaseinflowresistancelikethatbyincreasingliquidflowrate.

  • 标签: VENTURI CHANNEL REENTRANT jet flow process
  • 简介:在连续的原文如此增强纤维的钛矩阵的界面的反应和钛矩阵微观结构合成被调查。在800由二件样品的比较激活?????吠????挠浯潰楳整吗?

  • 标签: 增强纤维 微观结构 界面 原文 温度 合金