简介：Inordertostudytheatomicoxygencorrosionofspacecraftmaterialsinlowearthorbitenvironment,anatomicoxygensimulatorwasestablished.Inthesimulator,a2.45GHzmicrowavesourcewithmaximumpowerof600WwaslaunchedintothecircularcavitytogenerateECR(electroncyclotronresonance)plasma.TheoxygenionbeammovedontoanegativelybiasedMoplateundertheconditionofsymmetrymagneticmirrorfieldconfine,thenwasneutralizedandreflectedtoformoxygenatombeam.Thepropertiesofplasmadensity,electrontemperature,plasmaspacepotentialandionincidentenergywerecharacterized.TheatomicoxygenbeamfluxwascalibratedbymeasuringthemasslossrateofKaptonduringtheatomic5～30eVandacrosssectionofφ80mmcouldbeobtainedundertheoperatingpressureof10-1～10-3Pa.Suchahighfluxsourcecanprovideacceleratedsimulationtestsofmaterialsandcoatingsforspaceapplications.

简介：二个主要方法，不活跃的元素方法和安静元素方法，模仿这个过程多层并且焊接的multipass被考察，并且两个方法的缺点也被讨论。把分析基于这些，一个方法叫了节点动态松驰方法被放进提交模仿多层并且这个方法的焊接过程的multipass，和原则和申请详细被讨论。模仿的结果证明用节点，动态松驰方法能减少网孔失真，改进计算效率，并且获得好模拟结果。这个方法能也在有限元素分析在模拟增加或搬迁材料的地里被使用。

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简介：TheformingtemperatureofClinkermeltunderdifferentburningconditionshasbeenstudiedbyappearanceexaminationandthermalshrinkerdetermination,andtheviscosityofmelthasbeendiscussedbystudyingthecoordinationnumberofAl3+andFe3+incementclinkerburnedbydifferentmethodwithx-rayfluorescenceanalysisandMoss-bauerspectroscopy.Theresultsshowthattheclin-kermeltunderrapidburningmaycomeintoexis-tenceatlowertemperatureandIt’sviscosityislower.Sotheformingprocessesofclinkermaybedifferentatrapidburningfromordinaryburning.Theyareprobablyanimportantfactortopromotetheformationofclinkerburnedatlowertemperaturewithrapidburningmethod.

简介：碳nanotubes(CNT)被综合由电加热催化化学药品使用乙炔的免职方法(CCVD)(C2H2)同样碳来源和氮(N2)被electroplating作为搬运人气体，和镍催化剂装载。电的加热方法，作为一个新方法，由使用它的传导性直接触电碳纤维。形态学和结构CNT被描绘由SEM和TEM，和碳的表面性质在CNT的生长前后的纤维被拉曼光谱学描绘。试验性的结果表演电加热方法是一个新方法生产CNT，和罐头成长在一短时间，结晶化度和表面的很多CNT平均雏晶碳的尺寸在CNT的生长以后增加的纤维上它。另外，当，装载催化剂的electroplating能也被使用装载方法的理想，能控制数字，由控制plating的镍粒子的形状，和分发预定。

简介：新对光反应变色bisphenoxynaphthacenequinone混合物，6,6素数-[1-methylethylidenebis(4,1-phenyleneoxy)]二度(5,12-naphthacenequinone)(1)，被一个二拍子的圆舞方法综合，即，6的合成[4-(2-(4-hydroxyphenyl)异丙基)含苯氧基)从6-chloro-5的-5,12-naphthacenequinone(2)，12-naphthacenequinone(3)和bisphenol--A，和在DMF/丙酮的化合物2的进一步的反应面对无水的碳酸钾和碘化钾混合了溶剂。粗略的产品在一种precipitate形式被获得并且能被再结晶容易净化。溶剂作文在第二步在猛抛的粗略的产品的收益上标记影响。(编辑作者摘要)3个裁判员。

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简介：交流阻抗是一个新方法由电气化学的参数的变化在水和和水泥浆糊的变硬的过程期间学习毛孔结构和水和度的变化。采用的交流阻抗方法，我们与苍蝇灰和炉渣学习了水和和水泥浆糊的变硬的过程，并且在阻抗参数上分析了不同水和年龄，水文件夹比率和矿物质混合的影响。而且，我们由测试方法和X光检查衍射的常规孔把结果与那些作比较方法。结果证明那交流阻抗能在水泥和具体研究作为一种新技术被拿。

简介：Theshrinkagecharacteristicsofexpansiveconcretefilledsteeltube(CFST)areanalyzed,Coldshrinkage,creepandautogenousshrinkageareconsideredasthemainreasonsofcausingCFSTcontraction.InaccordancewiththeshrinkagecharacteristicsofexpansiveCFST,akindofenergy-storeddelayedexpansiveagentisexploited,whichcannotonlycompensatetheshrinkageofthecoreconcreteineverystages,butalsomakeCFSTexpandaccordingtothedelayedexpansionmechanism.Astheresult,theprestresslosswillbereducedandexpansiveenergywillbeutilizedeffectively.

简介：Spacesymmetryofprehnite,whichoccursincavitiesandveinswithinSkarnfromtheTieshanironmineraldeposit,Daye,Hubeiprovince,CentralChina,hasbeendeterminedusingselectedareaelectrondiffraction(SAED)andconvergent-beamelectrondiffraction(CBED)onthesubmicrometerscale.OurresultsconfirmthatthenaturalprehnitemayhavethestructurewithsymmetryPncm.Theunit-cellparametersofinvestigatedprehnite(a=0.458nm,b=0.555nm,andc=1.853nm)havebeencalculatedbyusingthemulticrystaldifiractionringsofgold,theinternalstandard.

简介：ANewmethod,namedatmosphericpressureplasmapolishing,fortheultra-smoothmachiningofthesiliconbasedmaterialsisintroduced.ByinputtingtheCF4gasintotheatmosphericpressureplasmaflame,highdensityreactiveradicalswillbegenerated,whichwillthenreactwiththesiliconbasedmaterials.ThereactionproductisthevaporizationoftheSiF4,whichcanbeeasilyprocessed.Inthisway,theatomicscalematerialremovalcanberealizedandthedefectfreeultra-smoothsurfacecanbeobtained.Anexperimentalsetupisbuiltup,andtheSiCpolishingexperimentiscarriedout.TheAFMtestresultshowsthatthefinishedsurfaceroughness(Ra)canbeimprovedfrom4.529nmto0.926nmin3minutes.

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简介：Inthispaper,usingthethermo-decompositionquantitativemethodtodeterminethealitecontentincementclinkerhasbeenstudied.Itisshownthatthealitecontentdeterminedbythethermo-decompositionmethodisveryclosetothatobtainedbytheopticalmicroscopymethod.Thepracticalquantitativeanalysisofaliteincementclinkerwascarriedoutbythethermo-decompositionmethodandaquitesatisfactoryresulthasbeenobtained.

简介：阶段地水晶(陆军)模型被雇用与格子失配和一个小倾斜角度在飞机凸的底层上模仿取向附生的层的生长的过程。系统的免费精力，取向附生的层的全部的原子序数，和弯曲和底层的角度的效果的变化被分析。结果证明当底层的表面是飞机时，免费精力随底层倾斜角度的增加增加，并且也，取向附生的层的全部的原子序数增加；当底层的表面是凸的时，免费精力随底层角度并且那么也的增加减少取向附生的层减少的全部的原子序数。这是取向附生的层的表面的边疆与增加凸的底层的倾斜角度从步bunching改变到hill-and-valley方面结构的原因。这些结果在对另外的方法结果的好同意。

简介：关于mesomechanics的一个新方法有限元素的研究被建议预言山峰砍mesoscopic上的材料放大的mudded置闰的力量。基于几何、机械的参数，与样品获得的种类失败标准一起变丑特征，样品上的单轴的压缩测试通过一个有限元素的模型被模仿，它从单轴的压缩测试的实验室产出与数据一致的值，暗示方法是合理的。把模型基于这，一shear测试被执行计算山峰砍mudded置闰的力量，与在文学报导的价值一致，从而提供为调查mudded的机械性质的一条新途径置闰材料。

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简介：Inthisstudy,highlyporousforsteritescaffoldswithinterconnectedporositiesweresynthesizedusingmulti-stepsintering(MSS)method.Thestartingpowderwasnanosizedforsterite,whichwassynthesizedfromtalcandmagnesiumcarbonatepowders.Thephasecomposition,averageparticlesizeandmorphologyoftheproducedforsteritepowderwerecharacterizedbyX-raydiffractiontechnique(XRD)andtransitionelectronmicroscopy(TEM).Forsteritescaffoldswereproducedbyfoamymethodusingpolymericsponges.MSSprocessincludingthreestepswasusedtoefficientlysintertheforsteritenanopowderswithoutdestroyingtheinitialporousstructureofpolymericsponges.TheresultsshowedthatMSStechniqueisanefficientandappropriateproceduretoproducehighlyporousforsteritescaffoldswithporesizeintherangeof100-300μm.Thecompressivestrength,compressivemodulusandporosityofC12specimen(sinteredat1650℃for1hwithsubsequentannealingat1000℃,for1000min)was1.88MPa,29.2MPa,and72.4%,respectively,whichisveryclosetothatofcancellousbone.Theapproachstudiedinthisresearchcanbedevelopedforothernanostructureceramicstoproducehighlyporousscaffoldswithinterconnectedporositiesforloadbearingapplications.

简介：Mn-Zn铁酸盐(Mn1−xZnxFe2有不同作文的O4)被象pH的如此的合成条件的一起沉淀方法，和影响准备价值，混合答案和NH4他们的微观结构和磁性上的HCO3答案被讨论。样品被X光检查衍射(XRD)和磁化测量仪器描绘。格子参数和综合材料的平均水晶的尺寸与相关软件Jade.5从相应XRD模式被计算。为不同pH价值的样品，当pH价值是7.0，8.0和9.0时，仅仅一个阶段被发现。有7.0的pH价值的样品展出了最高的浸透磁性的正式就职，最低强制力量，和使结晶的最好。为有7.0的pH价值的不同R价值的样品，仅仅一个阶段与R在所有样品，和样品被观察2.3的价值展出了最高的浸透磁性的正式就职和最低强制力量。作文主要有afected磁性的正式就职随Zn(x)的内容的增加增加，但是当x超过0.6时，减少的磁性，和浸透。强制力量的趋势相反是。然而，当x价值直到0.8时，没有磁力被展出。

简介：λ-MnO2waspreparedbycolumnmethodfromnormalspinelLiMn2O4withpurityof99.38%.TheinfluenceofLiMn2O4grainsizeandacidityofleachingsolutiononthelithiumleachingprocesswasstudied.TheresultsshowthattheappropriaterangeofLiMn2O4grainsizewas60-160meshesandtheconcentrationofleachingsolutionHClwas0.1mol·L-1.TheadsorptioncapacityQofλ-MnO2forlithiumincreasedwiththeincreaseofpHandchangedmarkedlyatpH6.0-10.0.Itwas3.80mmol/gatpH12.0.ThedistributioncoefficientsKdofLi+andNa+were3.406×104and2.300respectively,andtheseparationcoefftcientaLiNawas1.481×104atpH6.5.Asaresult,λ-MnO2isahighperformanceion-sievematerialforlithiumion.

简介：Adirectelectrolesscopper(Cu)coatingontungstenpowdersmethodrequiringnosurfacetreatmentorstabilizingagentandusingglyoxylicacid(C2H2O3)asareducingagentwasreported.TheeffectsofcoppersulfateconcentrationandthepHoftheplatingsolutiononthepropertiesofthepreparedW@Cucompositepowderswereassessed.ThecontentofCuinthecompositepowderswascontrolledbyadjustingtheconcentrationofcoppersulfateintheelectrolessplatingsolution.Auniform,dense,andconsistentCucoatingwasobtainedundertheestablishedoptimumconditions(flowrateofC2H2O3=5.01mL/min,solutionpH=12.25andreactiontemperature45.35℃)byusingcentralcompositedesignmethod.Inaddition,thecrystallineCucoatingwasevenlydispersedwithintheW@CucompositepowdersandCuelementinthecoatingexistedasCu0.TheformationmechanismfortheW@Cucompositepowdersbyelectrolessplatingintheabsenceofsurfacetreatmentandstabilizingagentwasalsoproposed.