简介：以钛酸丁酯为前驱体,聚乙二醇(PEG)2000为添加剂,采用溶胶-凝胶法制备TiO2薄膜,研究PEG2000的添加量对TiO2薄膜性能的影响。通过热重分析仪、X射线衍射仪(XRD)、比表面积及孔结构分析仪(BET)、扫描电镜(SEM)、接触角分析等手段对薄膜的热稳定性、晶相变化、比表面积、孔结构、表面形貌和亲水性进行表征。结果表明:随PEG2000添加量增加,TiO2薄膜锐钛矿晶型转变为金红石晶型的温度升高,薄膜表面从致密平滑转变为开裂粗糙,比表面积持续增大,平均孔径则减小,接触角由3°增至20.2°;当PEG2000的添加量为5%时,TiO2薄膜的性能最佳,表现出超亲水性。

简介：阐述了评价水-乙二醇抗磨性能的重要性，应选用抗磨性能较好的水-乙二醇，才能创造良好的经济效益。正确评价的方法必须使用叶片泵磨损试验，并以实际应用的实例，说明了叶片泵磨损试验最具代表性，而四球机的数据只能作参考值辅助评定结果，不能单独用来评价抗磨性能。

简介：炼钢厂转炉采用35t转炉→35tLF精炼→5机5流8m弧半径150mm×150mm断面小方坯连铸机浇注一棒材生产工艺轧制二级锚链。通过控制转炉终点碳含量、LF炉造还原精炼渣、精炼炉调整钢中Al成分、分阶段氩气控制操作、优化连铸二次冷却制度、加强保护浇注措施、使用低熔点低粘度高Al2O3含量保护渣，铸坯未出现肉眼可见缺陷，CCSAM2在转炉的开发获得了成功。

简介：通过分析炼铁厂二喷煤2#变压器二次侧单相接地故障实例,说明变压器中心线接地的重要性及接地线距离离变压散热片太近对变压器造成的损坏,并以示例说明了单相接地保护的作用,希望能提高配电变压器保护的实用性和经济性,做到安全、有效、合理。

简介：依靠测量和诊断手段，找出混合机大齿圈变形这一主要问题，通过优化决策方案收到较好地处理效果。

简介：江苏省发改委7月已下发《关于核准华电句容二期扩建工程项目的批复》（苏发改能源发[2015]678号），标志着华电句容二期扩建项目前期工作取得突破，获得核准。

简介：采用相变点测量、金相组织观察和力学性能测定,研究了不同正火温度对60mm厚Q345E钢板组织和性能的影响。结果表明：910℃×60min正火处理后,钢板组织更为均匀,晶粒更为细化,力学性能优越,达到国标要求。

简介：应用Gleeble-3800热模拟试验机对E36-T板坯在700～1050℃温度区间进行了拉伸试验,绘出温度与断面收缩率的关系曲线,得出700～920℃为脆性区,因此矫直温度应避开此区间。利用扫描电镜断口观察和金相分析,确定不同温度区间塑性降低的原因。

简介：对首钢长钢炼钢厂HRB400E钢种的温度控制情况进行了详细的论述.主要包括：液相线温度的计算;主要工艺路线;温降规律摸索的情况.

简介：介绍了汉钢公司生产HRB500E线材钢坯成分控制,轧制工艺控制及方案优化。通过解决HRB500E存在的问题,可为提升新品质量做好技术支撑。

简介：本文简述了酒钢HRB500E抗震带肋钢筋的研发过程,对其冶炼、轧制工艺做了较详细论述,给出试验结果,并就研发中存在的问题进行了分析。

简介：本文介绍了JCCY4E电动铲运机卷缆液压系统的设计方案，包括系统分析和系统计算，力求卷缆系统的性能达到最优。卷缆系统按车辆行驶速度和卷筒直径的变化使变量泵按照要求的压力输出流量，使卷筒按要求自动同步放缆和卷缆，效果较为理想。JCCY4E电动铲运机通过样车检测，卷缆系统收放电缆平稳，满足车辆运行的要求。

简介：介绍了南钢开发E36N高强船板的主要技术思路和关键工艺控制。通过对炼钢工艺的严格控制，得到了较高纯净度、内部质量较好的连铸坯；通过微合金化、合理的控轧控冷和正火工艺，得到了组织较细化的E36N钢板，具有优良的综合力学性能，满足供货要求。

简介：Loadedonthecordierite,therareearthdopedcompositecatalystwaspreparedbysol-gelmethodcombinedwithdippingtechnique.TakingOrthodichlorobenzeneasmodel,thecatalystwasusedtoremovethedioxinsofthewastegas.Theresultsshowedthatat280℃andgasspacevelocitybeing8000h-1,theorthodichlorobenzenecouldberemovedeffectivilybythepreparedCeO2-TiO2-V2O5compositecatalystwhoseactivitywasremarkablyenhancedbythedopingofCe,whiletheindustrialside-streamtestofdioxinsfromrefuseincinerationsmokeindicatedthatthedecompositionratecouldreachabove93%underthesameconditions.

简介：Inthiswork,boththethermalexpansionandelectricalconductivityofnanocrystallineLa2Mo2O9werestudied.ThenanocrystallinepowderofLa2Mo2O9wasobtainedbysol-gelmethod,andwiththehelpofSHP(superhighpressure)upto4.5×104atmat700℃forashorttime,andthenanocrystallinepowderwasdensifiedwithoutobviousparticlesizegrowth.TheelectricalconductivityofnanocrystallineLa2Mo2O9wasoneorderofmagnitudelowerthanthatofthemicrocrystallinesampleatthesametemperature.Owingtothephasetransition,themicrocrystallineLa2Mo2O9hasanabruptincreaseofthermalexpansionwithapeakvalueof48×10-6K-1at556℃.Forthenanocrystallinematerial,thepeakvalueincreasesto112×10-6K-1at520℃.Ontheotherhand,above600℃thesignificantgrowthofparticlesizeofthenanocrystallineLa2Mo2O9wasobserved,accompanyingbyatremendousincreaseofthermalexpansionwithapeakvalueofthirdhigherthanthatofLa2Mo2O9.

简介：Basedonthethermodynamicallyself-consistentanalysisandoptimizationofthreesub-binarysystemsoftheternarysystemPrCl3-CaCl2-MgCl2,thethermodynamicsofthisternarysystemhasbeenstudied.UsingHillertmodelandtakingMgCl2asanasymmetriccomponent,thePrCl3-CaCl2-MgCl2phasediagramhasbeencalculated.Theagreementbetweencalculatedandmeasuredcompositionsandtemperaturesatdeflectingpointsonliquidusisgood.Thesystemisasimpleeutecticonewithaeutecticpointat26.0mol%PrCl3,41.5mol%CaCl2,32.5mol%MgCl2;560℃（calculated）and26.0mol%PrCl3,39.4mol%CaCl2,34.6mol%MgCl2;546℃（measured）,respectively.

简介：TheZrO2-Al2O3ceramiccompositeswerepreparedbyappropriatetechniqueswithcommercialZrO2andAl2O3powdersasrawmaterialsandY2O3asstabilizer.TheresultsindicatethatwiththeintroductionofAl2O3intotheZrO2matrixwherethequantityofadditiveY2O3is3.5%(molefraction),thegrowthofZrO2grainsisefficientlyinhibited,whichhelpstheZrO2grainsexistinametastabletetragonalmanner;thushigherstrengthandtoughnessareacquired.Whenthecontentofaluminais20%(massfraction),thebendingstrengthandfracturetoughnessofthecompositesare676.7MPaand10MPa·m1/2respectively,themechanicalbehaviorsareclosetothosepreparedwithZrO2andAl2O3powderssynthesizedthroughwetchemicalapproach.Themechanicalbehaviorsofthecompositesarewellimprovedowingtothedispersiontougheningofaluminagrainsandphasetransformationtougheningofzirconiagrains.

简介：Differentrareearth(RE)ionsdopantswereaddedintotheSrAl2SiO7:Eu2+phosphorsinordertoenhancethephosphorescenceproperties,andtheeffectoftheREionsincludingYb3+,Ce3+,Nd3+,Dy3+andTm3+,wascomparativelyinvestigated.ItwasfoundthatNd3+additionimprovedthephosphorescencepropertiesobviouslyamongallthestudiedREions.Therefore,Sr1.96–xAl2SiO7:xEu2+,yNd3+phosphorswerestudiedindetail,andtheoptimumEu2+andNd3+concentrationsweredeterminedwiththeafterglowtimeofabout20min.Thephasestructures,photoluminescence(PL)properties,long-lastingphosphorescence(LLP)properties,afterglowdecaycurvesandthermo-luminescence(TL)fortheselectedphosphorsduringthecorrespondingstudywereinvestigated.AllthephosphorsexhibitedgreenPLemissionandLLPemission.ThereweretwoTLbandslocatedatabout325and380Kforthestudiedsamples,andtherelationshipbetweenREadditionandphosphorescencepropertieswasdiscussed.

简介：FluorescencespectraofSm2+andEu2+→Sm2+energytransferwerestudiedinSrB4O7.Thereappearsonlyfluorescencefrom5D0transitionofSm2+at77K.Thevibroniclinesassociatedwith5D0→7F0transitionwereobserved.Thethermalpopulationtoupperstatesof5D1and4f5dlevelsfrom5D0givesriseto5D1→7FJand5d→4fradiativetransitionsofSin2+athighertemperature.

简介：Reactionof(MeC5H4)3LnwithHOCH2CH2NMe2intetrahydrofuran(THF)givesthenewcomplexes[(MeC5H4)2Ln(μ-OCH2CH2NMe2)]2(Ln=Sm,Y,Nd)withnitrogenfunctionalizedμ-alkoxideligand.ThecomplexeswerecharacterizedbyelementalanalysisandIR,and[(MeC5H4)2Sm(μ-OCH2CH2NMe2)]2wasstructurallycharacterizedbytheX-raydiffractiontobeadimerformedbytwounsymmetricoxygenbridges.ThecomplexhasatricyclicskeletonwiththeadditionaltwoSm-NbondsviaintramolecularcoordinationofOCH2CH2NMe2.ThecoordinationnumberofthecentralmetalSmisnine.Thetitlecomplexesshowgoodcatalyticactivityforring-openingpolymerizationofε-caprolactone.