简介：用正交试验法研究了还原法热浸镀中合金主要成分铝、硅含量,浸镀温度、保温时间、钢带入水温度等对镀层附着强度、微观组织、表面质量、浸镀效果（漏镀情况）的影响,得出获取良好镀层质量的最佳工艺条件和参数。

简介：镍离子本身具有鲜艳的兰绿色,这一特性可用于镍的测定。文章结合La-Ni-Al合金中镍的测定方法研究,重点考察了本色光度法测镍的相关条件,设计了La-Ni-Al合金中镍的分析方法。方法具有高选择性、准确、简便、快速、经济的优点。

简介：本文着重介绍了ＺｎＡ１ＲＥＭｇ四元热镀合金在手工镀锌行业的应用情况，提出了该合金在手工浸镀时的理想工艺参数，并进一步闸明：ＺｎＡ正ＲＥＭｇ合金镀层较纯锌镀层减薄１／３，抗蚀性能较单一锌镀层提高１－２倍。

简介：Differentrareearth(RE=La,Ce,Pr,Nd,Sm,Y)andCumodifiednickelcatalystsforhydrogenproductionfrommethanedecompositionweresynthesizedbyasol-gelprocessandmethod.ThecatalystswerecharacterizedoranalyzedthroughBrumauer-Emmett-Teller(BET),X-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM)techniques.Andthehydrogenproductionperformancewasalsoevaluatedbyafixed-bedandmicro-reactiontechniquewithCH4→C+H2asaprobereaction.Theresultsshowedthatrareearthmodificationhadplayedagreatrolefornickelcatalysts,forexample,smallernickelparticles,goodthermalstability,highactivity,etc.Lawasthebestadditiveamongrareearthmodification.TheSEMofrareearthmodifiedcatalystsshowedorderedflower-likestructureandrareearthmodificationmadethenickelparticlesmovetothesurfaceofcatalysts.Inaddition,theSEMofnano-carbonswasalsochangedbyrareearthmodificationwithlong,narrownano-carbonfibersortubesobtained.Solidcarbonformationwaspreventedbyrareearthmodification.

简介：MeltspinningtechnologywasusedtopreparetheMg2Ni-type(Mg24Ni10Cu2)100–xNdx(x=0,5,10,15,20)alloysinordertoobtainananocrystallineandamorphousstructure.TheeffectsofNdcontentandspinningrateonthestructuresandelectrochemicalhydrogenstorageperformancesofthealloyswereinvestigated.ThestructurecharacterizationsofX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM)andscanningelectronmicroscopy(SEM)linkedwithenergydispersivespectroscopy(EDS)revealedthattheas-spunNd-freealloydisplayedanentirenanocrystallinestructure,whereastheas-spunNd-addedalloysheldananocrystallineandamorphousstructureandthedegreeofamorphizationvisiblyincreasedwiththerisingofNdcontentandspinningrate,suggestingthattheadditionofNdfacilitatedtheglassformingoftheMg2Ni-typealloy.TheelectrochemicalmeasurementsindicatedthattheadditionofNdandmeltspinningimprovedtheelectrochemicalhydrogenstorageperformancesofthealloyssignificantly.Thedischargecapacitiesoftheas-castandspunalloysexhibitedmaximumvalueswhenNdcontentwasx=10,whichwere86.4,200.5,266.3,402.5and452.8mAh/gcorrespondingtothespinningrateof0(As-castwasdefinedasthespinningrateof0m/s),10,20,30and40m/s,respectively.Thecyclestability(S20,thecapacitymaintainrateat20thcycle)oftheas-castalloyalwaysrosewiththeincreasingofNdcontent,andthoseoftheas-spunalloysexhibitedthemaximumvaluesforNdcontentx=10,whichwere77.9%,83.4%89.2%and89.7%,correspondingtothespinningrateof10,20,30and40m/s,respectively.

简介：主要采用金相及SEM分析方法,对20Cr2Ni4A锻圆表面裂纹性质及产生原因进行了分析,结果表明锻圆表面裂纹是由于原材料存在表面夹杂/渣引起的。

简介：TheSmBaCuMO5+δ(M=Fe,Co,Ni)(SBCM)powdersweresynthesizedbythecitratesol-gelmethodandthepowdersweresinteredtoceramicpellets.ThepowdersandsinteredceramicpelletswerecharacterizedwithXRD,TEMandSEMmeasurements.ThecathodecatalyticperformancesofSBCMceramicpelletsforammoniasynthesiswerestudiedfromwethydrogenanddrynitrogenatatmosphericpressureandlowtemperature,usingSBCMceramicpelletsascathode,Nafionprotonexchangemembraneaselectrolyte,Ni-Ce0.8Sm0....

简介：连铸1Cr18Ni9Ti由于TiN夹杂导致扒皮率高,工艺难以控制。通过几年的技术攻关,严格控制AOD精炼参数,采用吹氩喂丝新技术以及连铸无氧化保护浇注、加厚铸坯等措施,有效地解决了连铸坯表面质量问题,产品性能良好,为太钢连铸优势的发挥奠定了基础。

简介：对某公司Cr20Ni80电渣锭冶金质量进行全分析。分析发现该电渣锭中心线部位存在大量裂纹，裂纹沿晶界扩展。电渣锭裂纹区附近疏松较大较多，其它部位的疏松也较多。

简介：Theaimofthisresearchistopulseco-depositnano-CeO2particlesintoNi-W-Balloycoatingsinordertoimprovethesurfaceproperties.Theinfluenceofpulsefrequencyanddutycircleondepositionrate,microhardnessandmicrostructures,andtheinfluenceofheattreatmenttemperatureonphasestructures,microhardnessandabrasivityofNi-W-B-CeO2compositecoatingswereinvestigated.Theresultsindicatedthatthepulseco-depositionofnickel,tungsten,boronandnano-CeO2particlefromthebathwhichnano-CeO2particlewassuspendedbyhighspeedmechanicalstirringledtotheNi-W-B-CeO2compositecoatings,possessingbettermicrohardnessandabrasionresistancewhenheat-treatedat400℃for1h.Themicrohardnessas-depositedwith636Hzandthedepositionratewith0.0281mm·h-1wasthehighestatpulsefrequencywith1000Hzandpulsedutycirclewith10%.Microstructuresanalysisdisplaysthatdecreasingpulsedutycycleleadstorefinementingrainstructuresandtheimprovementofmicrostructures.X-raydiffractionshowsthatthecompositecoatingas-depositedwasmainlyintheamorphousstateandpartiallycrystallized,butwhenheattreatedat400℃,thecrystallizationtrendwasstrengthenedfurther.

简介：陶器的LaNiO3样品被稳固的州的反应方法在不同sintering温度准备。这被发现结果不是ABO3perovskite单身者阶段，但是双阶段La2NiO4和NiO，和二个阶段的百分比与sintering温度变化了。在1400湩的陶艺sintered？？

简介：ThemorphologyandcorrosionbehaviorofNi/Al2O3compositecoatingspreparedusingdouble-pulsedelectrodepositingtechniqueafteroxidizedunder800℃NaCldepositinairenvironmentwereanalyzedbyscanningelectricalmicroscope(SEM),X-raydiffraction(XRD)andenergydispersivespectrum(EDS).TheresultsshowedthatthecorrosionofallcompositecoatingswasacceleratedunderNaCldeposits,andthecorrosionproductswereratherporouswithpooradherencetothematrix.Al2O3particlesinthecoatingscanrefinethegrainsizeandimprovethehightemperaturecorrosionresistanceofthecoatings.Withinthetestscope,themoreAl2O3particlesinthecoatings,thelowercorrosionratescouldbeobtained,andthecorrosionmechanismwasalsodiscussed.

简介：阐述了影响1Cr18Ni9Ti管坯热穿孔工艺性能的因素,剖析了不锈钢荒管产生内折和纵裂的原因,提出了防止上述缺陷的措施。

简介：La1.5Mg17Ni0.5hydrogenstoragematerialswerepreparedbyhydridingcombustionsynthesis(HCS)andmechanicalalloying(MA)methodrespectively.TheexperimentalresultsshowthatthehydrogenabsorptionpropertiesofLa1.5Mg17Nio.5preparedbyMAarebetterthanthatbyHCS.La1.5Mg17Nio.5preparedbyMAcanabsorb6.73mass%hydrogenat523Kwithin1min,and4.92mass%hydrogenat423K.TheimprovementofhydridingpropertiesofLa1.5Mg17Ni0.5alloypreparedbyMAcanbeascribedtotheformationofnano-crystallineanddefectsduringthemechanicalalloying.

简介：试图为高温度的熔融的盐反应堆的安装和电极的建设开发材料，在750和950湩爠晥湩浥湥?瑳敲杮桴湥湩?猠汯摩猠汯瑵潩?瑳敲杮桴湥湩?眠牯?慨摲湥湩?愠摮瀠敲楣楰慴楴湯猠牴湥瑧敨楮杮的Ni-11Fe-10Cu的高温度的氧化行为上的艾尔和Y的效果

简介：研究设计了三种不同成分Cr25Ni30耐热合金,并对其组织特征及常温和高温性能进行了测定。结果表明：w（Al）为5%的合金室温拉伸强度最高,金属组织中出现较多的Ni-Al金属间化合物,显著降低其塑性;w（Al）为3%的合金塑性最好,但强度较低;w（Nb）为2%的合金抗氧化性最好,高温强度最高,综合性能最好。

简介：为水气体移动(WGS)反应的多重金属的催化剂(Ni-Mn-Ce-K/bauxite)被受精准备，并且催化结构和性质被N2调查物理，XRD，H2-TPR，和CO-TPD。结果显示7.5%CeO2的增加显然改进了WGS反应的活动，并且也增加了特定的表面区域和催化剂的毛孔体积。CeO2的增加减少减小温度，提高了H2O的吸附和激活，并且而且改进了公司的吸附内容，活跃地点没被改变，催化剂上的活跃地点的数字没显然增加。

简介：一系列Ni-CeO2催化剂被一起沉淀方法与Na2CO3准备，NaOH，并且混合急躁(Na2CO3:NaOH；1:1比率)同样急躁分别地。催化表演上的precipitants的效果，Ni-CeO2催化剂的物理、化学的性质在X光检查的帮助下被调查衍射(XRD)，Brumauer-Emmett-Teller方法(赌注)，Fourier变换红外线的光谱学(英尺红外)，thermogravimetry(TG)，和H2-TPR描述。Ni-CeO2催化剂为反向的水气体移动反应关于他们的催化表演被检验，并且他们的催化活动是被评价：Ni-CeO2-CP(Na2CO3:NaOH=1:1)>Ni-CeO2-CP(Na2CO3)>Ni-CeO2-CP(NaOH)。相关到特征结果，催化剂由一起沉淀准备了与，这被发现混合急躁(Na2CO3:NaOH；1:1比率)同样急躁氧空缺的大多数数量与高度驱散的Ni粒子伴随了，它做了相应Ni-CeO2-CP(Na2CO3:NaOH=1:1)催化剂展览最高催化的活动。当时Na2CO3或NaOH急躁在Ni-CeO2催化剂导致了更少或没有氧空缺。作为结果，Ni-CeO2-CP(Na2CO3)和Ni-CeO2-CP(NaOH)，催化剂介绍了差的催化性能。

简介：在甲烷(POM)的部分氧化的催化活动和稳定性混合方法的CeO2-ZrO2和-Al2O3的影响在Ni/Ce0.7Zr0.3O2-Al2O3催化剂上被调查。催化剂被XRD，TPR，H2-chemsorption，和TG-DTA描绘。为新鲜催化剂，结果证明混合催化剂(原子)的盐先锋比混合方法(摩尔)和机械地混合方法(MECH)的粉末的催促的人准备的催化剂介绍了更好的性能。XRD的结果建议在在原子样品的CeO2-ZrO2和Al2O3之间的相互作用比其它强壮，它导致了更多的格子缺点和从而更好的起始的活动。而且，MECH样品在24h稳定性测试有最好的稳定性和最少的焦炭免职。TPR和H2-chemsorption的结果显示在MECH样品的Ni-Al的亲密接触提高了抵抗焦炭免职和金属sintering的能力。

简介：RE-dopedNi-basedcatalystswerepreparedbysol-gelmethod.ThesecatalystswereappliedtothereactionofCO2reformingCH4tosyngas.ThestudiesrevealthatRE-doped(RE=La,Ce,Sm,Yb)Ni-basedcatalystsshowhighercatalyticactivitythanundopedNi-basedcatalyst,andwiththeincreasingofRE-dopedquantity,thecatalyticactivityofcatalystsexhibitsregularchanges.WhenRE-dopedquantityis0.2%(molarratio),thecatalystsshowthebestcatalyticactivity.