简介：这份报纸论述方法由压电的生成器从沥青人行道收获机械精力。结果证明在沥青人行道的势能能每公里每小巷直到150kW/h。机械精力的部分能被压电的变换器收获。七个典型变换器的表演通过有限元素分析被检验。PZT堆的结果表演并且多层，在沥青人行道环境的钗钹和桥罐头工作。PZT堆积并且多层更高让精力变换评价。然而，如果这些变换器在人行道直接被嵌入，全部的收获精力是小的。一个原型人行道发电机用PZT堆积被开发增加收获精力。发电机能在交通拥挤下面从人行道收获超过50kW/h精力。816PZT堆积为一个发电机被推荐。圆形状被建议让PZT堆积减少应力的集中。并且多层的结构被推荐因为PZT堆发电机的电的潜力到减少。生成器能在沥青人行道作为传感器被扩大，它能被用来监视交通，人行道压力和温度。

简介：WederivedrevisedeffectivediffusionenergybarriersfollowingtheBoltzmanndistributionassumptionforimpurityatomsinabulkmaterialundertheimpactofvariouskindsofpointdefectstorevealtheinsightsofmigrationmechanisms.Theeffectivediffusionenergybarriersofcopperimpuritiesinbulkzirconiumwerecalculatedthroughthefirstprinciplemethodunderthepresentedhypothesis.Ourresults(?E||=1.27eV,?E⊥=1.31eV)agreedwellwiththeexperimentalresults(?E||=1.54eV,?E⊥=1.60eV),whichvalidatedbulkdiffusionasthemajormechanismforcopperdiffusioninzirconium.Theeffectivediffusionenergybarrierscouldbeusedforestimatingwhetherthedefectswillacceleratethediffusionorslowthemdownbyactingastrapsoftheimpurityatoms.Ontheotherhand,thefirstprincipleresultsoftheimpuritydiffusionviadefectscouldbefurtherusedasinputsoflargerscalecomputationalsimulations,suchasMC(MonteCarlo)orPhaseFieldcalculations.

简介：ThehybridsourcethatcombinedCO2laserwithTIGarctoproceedweldingwasanalyzed.Basedonanenergymodel,thetemperaturefieldandweldshapewerecalculatednumerically.Theheattransfercharacteristicofthehybridheatsourcetoworkpieceanditseffecttoweldshapewerealsoanalyzed.Throughanalyzingtheenhancementeffectofthehybridheatsource,theabsorptioneffectanddefocusingeffectofthehybridarctolaserwerecalculated,andtheregularityoftheenergydensitytothecurrentwasobtainedsubsequently.Atlast,thecriticalenergymatchestoinducetheenhancementeffectofCO2laser-TIGarchybridweldingwereobtained.

简介：TherelationshipbetweenCharpyabsorbedenergyandthefracturetoughnessbymeansofthe(cracktipopeningdisplacement(CTOD))methodwasanalyzedbasedontheWeibullstresscriterion.TheCharpyabsorbedenergyandthefracturetoughnessweremeasuredfortheSN490Bsteelundertheductile-brittletransitiontemperatureregion.FortheinstrumentedCharpyimpacttest,thecurvesbetweentheloadingpointdisplacementandtheloadagainsttimewererecorded.ThecriticalWeibullstresswastakenasafracturecontrolledparameter,anditcouldnotbeaffectedbythespecimenconfigurationandtheloadingpatternbasedonthelocalapproach.TheparameterscontrolledbrittlefractureareobtainedfromtheCharpyabsorbedenergyresults,thenthefracturetoughnessforthecompacttension(CT)specimenispredicted.Itisfoundthattheresultspredictedareingoodagreementwiththeexperimental.ThefracturetoughnesscouldbeevaluatedbytheCharpyabsorbedenergy,becausethelocalapproachgivesagooddescriptionforthebrittlefractureeventhoughtheCharpyimpactspecimenortheCTspecimenisusedforthegivenmaterial.

简介：在上面的bainite和更低的bainite之间的转变温度与一个扩大吉布斯精力平衡模型一起被计算，它对份量上有能力在全部变厚的过程期间在bainitic铁酸盐绳轮以内描述碳过度饱和的进化。脱臼上的intra板条渗碳体降水的成核率被计算基于碳过度饱和的度。上面的bainite和更低的bainite被有效成核密度因此区分，因此，一个数字标准能被设置定义转变。模型被用于Fe-xC-1Mn/2Mn/1Mo第三的合金。结果证明转变温度在更低的碳集中与体积碳内容增加，但是在更高的碳区域减少。这预言在Mn和瞬间alloyed系统与试验性的观察同意很好。而且，它在发生在Fe-xC-2Mn系统的最高的转变温度和碳内容在对报导试验性的数据的好同意。碳集中转变温度曲线的塑造的特性显示二相反的物理机制操作的反的V同时。分析被执行提供解释。

简介：有alloying原子X=C，B，N，O和空缺的镁和它的合金的概括叠的差错(GSF)精力和表面精力用第一原则的方法被调查了。叠的差错精力上的alloying原子和空缺的占优势的减少效果在slip飞机附近在第一层从他们的位置被结果，这被发现。叠的差错精力是将近与纯镁一样当alloying原子和空缺被放在时第二，第三，第4，第5和第6层。O强烈减少Mg的GSF精力，这被显示出。alloying原子C，B和N增加表面精力，但是O和空缺减少Mg的表面精力。Mg和Mg合金的韧性被使用在表面精力和不稳定的叠差错精力之间的比率基于瑞斯标准讨论了。

简介：Thestudyofthetriplejunctionsofthegrainboundariesinsomefccsolidsolutions,orderedalloysandintermetallicswithL12hasbeencarriedoutusingtheopticalmetallographyandTEMmethods.Two-typesofthetriplejunctionswerefoundinthealloysinvestigated(1),consistingoftheboundariesoftherandom(RT),and(2),consistingoftheRTboundaryandthespecialboundaries(ST).TherelativevaluesoftheRTandSTboundaryenergyweredeterminedonthebasisofthemeasurementsoftheanglesbetweenthegrainboundaryplanes.IthasbeenshownthattheenergyofSTboundariesincreaseswiththeincreaseofthestackingfault(SF)energy.TheenergyoftheRTboundariesdoesnotdependontheSFenergy.

简介：Duetotheminiaturizationofmoderndevicesre-quirecomponentswithlightweight,highintegra-tionandtheabilitytostoreenergyinassmallvol-umeaspossible.Asaresult,energystoragedensitybecomesanimportantfigureofmeritforenergystor-agedevices.Inthispaper,firstly,wediscussedtheenergydensityinfine-grainedleadzirconatetita-nateglass-ceramicscompositewiththehelpofthe

简介：Excessiveconsumptionofelectricalenergyhashamperedthewidespreadapplicationofelectrochemicaltechnologyfordegradationofvariouscontaminants.Inthispaper,aFe-basedmetallicglass(MG)wasdemonstratedasanewtypeofelectrocatalysttoeffectivelyandeconomicallydegradeanazodye.Incomparisontoothertypicalelectrodes,Fe-basedMGelectrodesexhibitaminimizeddegradationtime,andthespecificenergyis4-6ordersofmagnitudelowerthanthatofdimensionallystableanode(DSA),metal-likeboron-dopeddiamond(BDD)andotherelectrodes.Assacrificialelectrodematerials,Fe-basedMGshavelessspecificelectrodemassconsumptionthanironelectrodes.TheuseofFe-basedMGswillpromotethepracticalapplicationofelectrochemicaltechnologyandtheuseofMGsasfunctionalmaterials.

简介：Energy-storageweldingconnectioncharacteristicsofrapidlysolidifiedAZ91DMgalloyribbonswith40～70μmthicknessareinvestigatedusingamicrotypeenergy-storageweldingmachine.Themicrostructureandperformanceoftheconnectionjointsareanalyzedandstudied.Theresearchresultsindicatethatenergy-storageweldingisabletorealizethespotweldingconnectionofAZ9lDMgalloyribbons.Theweldingnuggetconsistsofdevelopedα-Mgequiaxedgrainswiththesizesof1.2～2.7μmandintergranulardistributedβ-Mg17Al12compounds.Thethicknessofbondzoneisabout4μmandthesolidificationmicrostructureischaracterizedbythefineequiaxedgrainswiththesizesof0.8～1.2μm,andgrainboundaryhasbecomecoarsening.ThecolumnarcrystalinHAZalsobecomesslightlycoarseningandthegrainboundaryhasbroadened,however,thereisnoobviouschangeinitsprimitivemorphologyandcrystallographicdirection.Whenweldingenergyisabout2.0J,theweldingjointswithhighershearstrengthandsmallerelectricalresistivityareobtained.

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简介：Anewpotassiumnitrate(KNO_3)/diatomiteshape-stabilizedcompositephasechangematerial(SSCPCM)waspreparedbythemixingandsinteringmethod.KNO_3servedasthephasechangematerial(PCM)forthermalenergystorage,whilediatomiteactedasthecarriermatrixtoprovidethestructuralstrengthandpreventtheleakageofPCM.ItwasfoundthatKNO_3couldberetained65wt%intoporesandonsurfacesofdiatomitewithouttheleakageofmeltedKNO_3fromtheSS-CPCM.ThecalculatedfillingrateofmoltenKNO_3thatcouldenterintothedisc-likeshapeporeofdiatomiteverifiedthescanningelectronicmicroscopyimagesofSS-CPCM.X-raydiffractionandFouriertransforminfraredspectroscopyresultsshowedthatnoreactionoccurredbetweenKNO_3anddiatomite,performinggoodcompatibility.Accordingtothedifferentialscanningcalorimetryresults,after50thermalcycles,thephasechangetemperaturesformeltingandfreezingofSS-CPCMwith65wt%KNO_3werechangedfrom330.23°Cand332.90°Cto330.11°Cand332.84°Candcorrespondinglatentheatsvariedfrom60.52J/gand47.30J/gto54.64J/gand41.25J/g,respectively.TheKNO_3/diatomiteSS-CPCMmaybeconsideredasapotentialstoragemediainsolarpowerplantsforthermalenergystorage.