简介:深圳市新元铁材料有限公司专业服务模具企业,提供一站式模具钢材采购解决方案!展品一:阿赛洛SP300化学成分-重量百分比舆型值(钢板厚度100mm)SUPERPLAST300(SP300)是一种塑料模具钢,预硬到300HB。SUPERPLAST300专门设计用于满足当前塑料模工业的需求。它的原创化学成分确保了特定的性能,可有效代替常规P20和1.2738等钢种:极高的加工性:均匀的优化硬化能力(最厚到910mm);优异的焊补性能;高的热导率。此外,对于模具制造商和模具用户而言,SP300也具有显著的优势,可以节省模具制造成本和模具使用成本。
简介:ThemixturemodelofAl85Y4Nd4Ni7alloyinwhichapartiallycrystallizedamorphousalloyisregardedasananocompositeofanAlnanoparticleandaremainingamorphousmatrixispresented.Itsevolutionintheprocessofcrystallizationhasbeeninvestigatedbydifferentialscanningcalorimetry(DSC),X-raydiffraction(XRD),andtransmissionelectronmicroscopy(TEM).Mainlyamorphousstructurewithα-Alnanocrystalsembeddedintheamorphousmatrixhasbeenrevealedbymeltspiningthealloy.Crystallizationisshowedtooccurinthreestages:(1)crystallizationofamorphousalloyandformationofAlNiY,AlNdNiandunknowncrystallinephases,(2)formationofAl3YandAl3Nd,and(3)formationofAl3Ni.
简介:Non-stoichiometriccompoundfluoride-dopedLiFePO4/Ccathodematerialsweresynthesizedviasolid-statereactionusingMgF2andAlF3asdopant.Thefluoride-dopedLiFePO4/CsampleswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),andelectrochemicaltesting.TheresultsshowthatthematerialsarewellcrystallizedandfluoridedopingcannotchangethespacestructureofLiFePO4.SlightamountsofFe2O3withnofluorideimpuritywere...
简介:Inthiswork,asimpleandfacileone-potoleylaminesolvothermalsyntheticmethodwasdevelopedtosynthesizeCu_2ZnSnS_4(CZTS)nanocrystals.AndtheCu_2ZnSn(S,Se)_4(CZTSSe)thinfilmswerepreparedbyselenizingCZTSnanocrystals.TheobtainedCZTSnanocrystalsandCZTSSefilmswerestudiedusingX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM),scanningelectronmicroscopy(SEM),energy-dispersiveX-rayspectroscopy(EDX),andultraviolet–visiblespectrophotometer(UV–Vis).TEMresultsshowthatthesphere–likeCZTSnanoparticleswithdiameterbetween12and35nmarepolydispersed.XRDstudiesindicatethatthepreparedCZTSnanocrystalsformkesteritecrystalstructure,andtheCZTSSefilmswithkesteritecrystalstructurearealsoobtainedattheannealingtemperaturesof500and550°C.Inparticularafterannealingat500°Cfor20min,theCZTSSefilmexhibitsasmooth,uniform,crack-free,andlarge-grainedtopographyandpossessesCu-poorandSn-richcomposition.Moreover,itshowsstrongopticalabsorptionfromvisibletonear-infrared(IR)region,anditsopticalbandgap(Eg)isfoundtobeabout1.44eV.
简介:ToinvestigatethedegradationofcorrosionresistanceofZircaloy-4inLiOHaqueoussolution,SIMS(secondaryionmassspectrometry)analysiswasperformedtoexaminetheprofilesofLi+,K+,andOH-inoxidelayersformedinthesameconcentration(0.1mol/L)LiOHandKOHsolutions.Eventhoughtheoxidelayershaveanequalthickness,thepenetrationdepthofK+isshallowerthanthatofLi+,andthepenetrationdepthofOH-corrodedinKOHsolutionisalsoshallowerthanthatcorrodedinLiOHsolution.ItshowsthatthediffusionofOH-intooxidelayerisaccompaniedbythecorrespondingcation.ThedifferenceofdegradationeffectofLiOHandKOHsolutionsonthecorrosionresistanceofZircaloy-4wasdiscussed.
简介:在H2SO4-Fe2(SO4)3体系中研究载金黄铁矿的浸出动力学,探讨反应温度、Fe3+浓度、硫酸浓度、搅拌速度等对黄铁矿浸出的影响规律。结果表明:在H2SO4-Fe2(SO4)3体系中,在30~75°C下黄铁矿浸出过程主要受化学反应控制Fe3+浓度与黄铁矿的浸出呈正相关,通过Arrhenius经验公式求得浸出表观活化能为51.39kJ/mol。EDS与XPS分析结果表明:黄铁矿氧化过程中硫的氧化经一系列中间形态,最终被氧化成硫酸根,并伴有部分元素硫生成,符合硫代硫酸根氧化路径机理。