简介：Toensureareliableoperationofthe2.5MWgasturbineengine(GTE-2.5)withtheinletgastemperatureTIT=1623K,studieswereperformedoverthethermalstateofthenozzleguidevanesandrotorbladeswiththetemperatures,ratesandflowsoftheworkingmediaandcoolingairsimulatingallthepotentialturbinestageoperatingduties.Thesteadystateandthermal-cyclictestshavingbeenaccomplished,therewasnovisibledefectontherotorbladesandthenozzlevanes.Afterwards,theysurvivedtheendurancetestsattheratedcooling.Therefore,thefunctionalityoftheshellthin-wallhybridnozzlevanesandrotorbladesunderthevariableoperatingdutiesofthegasturbineatthe'shock'and'cyclic'loadsoftheworkingmediatemperaturevariationshasbeendemonstrated.

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简介：Theresultsofatheoreticalstudyontheinfluenceofstrengthofinterphaseboundariesinmetal—ceramiccompositeonmacroscopicalcharacteristicsofcompositeresponsesuchasstrength,deformationcapacity,fractureenergyandfracturepatternarepresented.Thestudywasconductedbymeansofcomputer-aidedsimulationbymeansofmovablecellularautomatonmethodtakingaccountofadeveloped'mesoscopical'structuralmodelofparticle-reinforcedcomposite.Thestrengthofinterphaseboundariesisfoundtobeakeystructuralfactordeterminingnotonlythestrengthpropertiesofmetal—ceramiccomposite,butalsothepatternandrateoffracture.Theprinciplesforachievementofthehigh-strengthvaluesofparticle/binderinterfacesinthemetal—ceramiccompositionduetotheformationofthewidetransitionzones(areasofvariablechemicalcomposition)attheinterphaseboundariesarediscussed.Simulationresultsconfirmthatsuchtransitionzonesprovideachangeinfracturemechanismandmaketheachievementofahigh-strengthandahighdeformationcapacityofmetal—ceramiccompositepossible.

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简介：Ceramicsaregoodalternativetometalasbearingcouplematerialsbecauseoftheirbetterwearresistance.AFiniteElement(FE)studywasperformedtoinvestigatethecontactmechanicsandstressdistributionofCeramic-on-Ceramic(COC)hipresurfacingprostheses.Itwasfocusedinparticularonaparametricstudytoexaminetheeffectsofradialclearance,loading,aluminacoatingontheimplants,bonequality,andfixationofcup-boneinterface.Itwasfoundthatareductionintheradialclearancehadthemostsignificanteffectonthepredictedcontactpressuredistributionamongalloftheparametersconsideredinthisstudy.Itwasdeterminedthattherewasasignificantinfluenceofnon-metallicmaterials,suchastheboneunderneaththebearingcomponents,onthepredictedcontactmechanics.Stressshieldingwithinthebonetissuewasfoundtobeamajorconcernwhenregardingtheuseofceramicasanalternativetometallicresurfacingprostheses.Therefore,usingaluminaimplantswithametalbackingwasfoundtobethebestdesignforceramicresurfacingprosthesesinthisstudy.Theloading,bonequality,andacetabularcupfixationconditionswerefoundtohaveonlyminoreffectsonthepredictedcontactpressuredistributionalongthebearingsurfaces.

简介：AcompletemodelofMetal-Semiconductor-MetalPhotodetector(MSM-PD)ispresented.Itcanbeusedinanycircuitsimulators.SimulatedDCcharacteristicsforaGaAsMSM-PDareingoodagreementwithreportedresults.

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简介：在台中的四层楼新案为了呼应台中的当地建筑特色，因地制宜地运用“MetalHouse”的概念，呼应该品牌的工业前卫感。设计师以金属浪板贯穿整个设计，从外观到室内都渗透了浓浓的前卫时尚。

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简介：Au/Al_2O_3/Al金属/绝缘体/金属连接(MIMJ)和Au/SiO_2/Simetal/insulator/Si连接(MISJ)成功地被构造了。这些连接的轻排放被表面电浆子电磁声子(SPP)在表面粗糙下面调停。从MISJ的轻排放从MIMJ比那更一致、稳定。MISJ的轻力量比MIMJ的高是大约2份～3订单。MISJ的轻排放光谱特别被分析。在光谱，有一座主要山峰在610nm～6的波长定位了40nm，它主要由于有在Au/air和Au/SiO_2接口的表面粗糙的SPP的夫妇。在更短的波长区域位于光谱的一座弱山峰也被发现，它被doped-Si血浆摆动的直接放射引起。

简介：ThelowresistancePTCceramicthermistormaterialwithexcellenteleectricalpropertiesaresuccessfullyfabricatedbyrawmaterialsatindustrialrangemadeinourcountryonthestudyofitscompositionexpressionandfabricationprocessbyusingtheadditionofNb,La,Y,Ta,microstructureregulatorBNandASTLphase.Thecompositionanditsfabricationmethodarestudied.TherelationofelectricalpropertiesofthePTCceramicmaterialtoitscompositionexpressionanditsrelatedelectricalpropertiesarediscussed.

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简介：铈磷酸盐粉末被二氧化铈和磷酸盐酸的直接稳固的液体反应在Ce综合：1:1的P比率。阶段纯并且细粒尺寸CePO_4powers能被锻烧获得是比600degC高在温度收到了粉末。它是表明的thaiCePO_4粉末的粒积和形态学在各种各样的温度被锻烧。有趣的分层的晶体结构和在CePO_4内在渗出的表面上沿着挤压应力方向交叉并且发生的一系列微裂缝被观察。CePO_4的韧性和machinabililty陶器被归因于分层的结构。连续用机器制造碎片在转的表面上被观察。

简介：Alkalimetalhydroxideandhydridecompositesystemscontainbothprotic(HbondedwithO)andhydridichydrogen.Theinteractionofthesetwotypesofhydridesproduceshydrogen.Theenthalpyofdehydrogenationincreasedwiththeincreaseofatomicnumberofalkalimetals,i.e.,-23kJ/molH2forLiOH-LiH,55.34kJ/molH2forNaOH-NaHand222kJ/molH2forKOH-KH.Thesethermodynamiccalculationresultswereconsistentwithourexperimentalresults.H2wasreleasedfromLiOH-LiHsystemduringballmilling.ThedehydrogenationtemperatureofNaOH-NaHsystemwasabout150℃;whereasKOHandKHdidnotinteractwitheachotherduringtheheatingprocess.Instead,KHdecomposedbyitself.Inthesethreesystems,NaOH-NaHwastheonlyreversiblehydrogenstoragesystem,theenthalpyofdehydrogenationwasabout55.65kJ/molH2,andthecorrespondingentropywasca.101.23J/(molH2K),sothetemperatureforreleasing1.0barH2wasashighas518℃,showingunfavorablethermodynamicproperties.TheactivationenergyforhydrogendesorptionofNaOH-NaHwasfoundtobe57.87kJ/mol,showinggoodkineticproperties.

简介：在自然，微生物涉及岩石捱过，在从矿物质的金属的动员，并且在金属降水和免职。这些微生物原则和过程能被改编对待微粒固体浪费。特别从金属珍视获得的稳固的矿物质(沥滤的称为的简历)的金属的微生物增溶是在采矿工业的一种著名技术。我们这里集中于非采矿矿物质浪费为包含金属的稳固的浪费的处理表明基于采矿的技术的适用性。从微粒苍蝇灰的在案例研究介绍的、微生物引起的金属动员(从市政的稳固的浪费焚化发源)而铅，铬，和镍被2，11和32%分别地动员，由Acidithiobacilli导致了>80%的镉，铜，和锌动员。另外，形成HCN细菌的潜力(Chromobacteriumviolaceum，Pseudomonasfluorescens)当面对稳固的材料成长时，被调查动员金属(例如，包含铜的矿石，电子碎片，花的汽车催化变换器)。C。violaceum从有细密纹理的镍粉末作为tetracyanonickelate动员镍被发现有能力。黄金是微生物引起地是的solubilized从电子废物的dicyanoaurate。另外，氰化物建筑群铜在切碎的打印电路板碎片的生物处理期间被检测。水溶性的铜和铂氰化物也在花的汽车的处理期间被检测催化变换器。

简介：为压电的陶器的排放变换器匹配的Butterworth上的一条定理被介绍并且证明。宽带匹配的复杂问题由于定理的明确的公式被改变到简单的算术的。当力量获得接近1时，它在一个例子被显示出在匹配以后，变换器的带宽显著地增加。

简介：陶瓷在新石器时代就已经与人类建立起了千丝万缕的联系。Ceramic瓷器是陶瓷的重要组成，反映了人类对精神美学的需求，随着瓷器工艺的发展，不仅在艺术方面，瓷器已经渗透到社会生活的各个方面。

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