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  • 简介:10月8日至11日,国家新材料产业发展专家咨询委员会秘书处(以下简称“专家咨询委秘书处”)副秘书长周少雄教授带领专题调研组赴安徽、福建、浙江调研稀土永磁材料研发、生产、应用情况.钢铁研究总院、安泰科技股份有限公司、有研科技集团有限公司等单位相关专家以及专家咨询委秘书处工作人员参加调研.

  • 标签: 稀土永磁材料 新材料产业 专家咨询 咨询委员会 专题调研 安泰科技股份有限公司
  • 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.

  • 标签: pulse ELECTRODEPOSITION composite coatings deposition rate
  • 简介:ElectronMicroscopicIn-situObservationforPreparationofUltrafineLaO3NanophasePowderGaoYuzun(高愈尊),LiYonghong(李永洪),ZhangTaisong...

  • 标签: La2O3 NANOPHASE Insitu OBSERVATION High voltage
  • 简介:OpticalabsorptionandemissionintensitiesofNd3+ioninKLu(WO4)2crystalwereinvestigated.BasedontheJudd-Offelttheory,wecalculatedthefollowingspectralparameters:phenomenologicalintensityparametersΩ2=5.567×10–20,Ω4=3.597×10–20,andΩ6=3.800×10–20cm2.Theradiativelifetimeoflevels4F3/2was182.58μs.Thefluorescencebranchingratioforthetransition4F3/2→4I11/2was46.98%.Inaddition,theradiativetransitionprobabilitiesAJ,J’,oscillatorstrengthsPJ,J’andthevaluesofinte...

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  • 简介:StudyonMorphologyofSurfaceofLargeAreaYBCOThinFilmsonZr(Y)OSubstrateWangRuikun(王瑞坤),SunLihong(孙丽虹),LiuHongfei(刘鸿飞)WangXiaopi?..

  • 标签: Yba2Cu3Oy THIN film SURFACE MORPHOLOGY
  • 简介:阐述了120~150mm特厚压力容器用12Cr2Mo1R钢板在南阳汉冶特钢采用100t转炉—LF+VD精炼—模铸浇注—3800mm轧机轧制—热处理工艺研制开发过程,通过合理化学成分设计、严格冶炼、模铸浇铸、轧制及热处理工艺控制,最终确保了120~150mm厚12Cr2Mo1R保一级探伤、保力学性能成功研制,并实现了批量化生产。

  • 标签: 压力容器 12CR2MO1R 模铸 热处理
  • 简介:我国现有各类国营矿山企业,对我国社会主义经济建设发挥着至关重要工业原料保障作用。《矿产资源法》对国营矿山法律地位作了十分明确原则性规定:“国营矿山开采矿产资源主体,国家保障国营矿山企业巩固和发展。”但多年来地方群众采矿势力不断地侵袭国营矿山资源,造成严重干扰和破坏。此现象不仅屡禁不止而且愈演愈烈。为何有法不能治理,如何维护国营矿山主体地位,使其正常生产,已引起社会关注。积极寻求有效对策,切实加强矿产资源保护一个急需探讨课题。

  • 标签: 侵采 矿山资源 探讨
  • 简介:管道磨损影响深井矿山充填系统正常生产主要因素之一。所谓深井开采,就是由于开采深度增加,使矿山岩石力学性质和地应力特征,与浅井矿山相比发生了根本性变化,即为了防止岩爆和岩石冒落事故,必须采取有针对性、有效局域支护措施。对于深井开采

  • 标签: 深井开采 充填系统 管道 磨损 室内试验
  • 简介:通过对2号常化酸洗线活套支撑小车弹簧式力矩卷筒进行了改进,提高了弹簧式力矩卷筒本体强度及钢丝绳破断拉力强度,延长了弹簧式力矩卷筒使用寿命,降低了力矩卷筒失效频率,提高了设备有效开动率,为设备点检和维护创造了良好条件,满足了正常生产管理要求,确保了生产正常运行。

  • 标签: 力矩卷筒 拉力 破断拉力
  • 简介:高度有效Tb3+激活SrAl2O4黄磷被一个联合combustionsolid状态反应方法综合。SrAl2O4先锋:Tb3+黄磷经由一个燃烧过程被准备,然后同样准备粉末被加热在一减少在1250点激活碳周围??慥獲?

  • 标签: 燃烧分析 SrAl2O4: TB^3+ 结晶度 稀土
  • 简介:DyPt2filmswerepreparedbyalternatedepositionthinDyandPtlayersonglasssubstratesbyDCmagnetocontrolledsputteringmethod.TheXRDdataindicatedthatforas-depositedDy/Ptfilms,andtheperiodiclayeredstructuresalongthicknessdirectionwereevidencedwithlowangleX-rayscattering.Withincreasingannealingtemperature,thecompoundsofDyPt,DyPt2andDyPt3wereformedsuccessivelyattemperaturerangingfrom300to400℃.ItwasfoundthatthecompositionreactionDyPt+DyPt3→2DyPt2tookplaceat500℃.Afterannealingat500℃for1h,thecompoundsDyPtandDyPt3transformedcompletelyintotheDyPt2compound.

  • 标签: Dy/Pt thin film microstructure heat treatment
  • 简介:Forthegoalofsulfurrecovery,mostmethodsareaimedatthetailgaswithhigh-concentrationH2S,butfeweffectivemethodsareusedforlow-concentrationH2S.Inthiswork,Low-concentrationH2Scouldbepurifiedwellbyliquidphasecatalyticoxidation(LCO),andthesulfurresourcecouldalsoberecovered.TheabsorptionsolutionwaspreparedbyFeCl3andsulfosalicylicacid.Undertheexperimentalconditions,theconversionofH2StoScouldbemaintainedabove94%at60℃.InordertoenhancetheeconomicalefficiencyofLCOmethod,theabsorptionsolutionwasmodifiedbydopingCe,andaseriesofexperimentsweredesignedtoinvestigateitsperformance.TheresultsshowedthattheconversionofH2Shadnoobviousimprovement,butabove98%conversioncouldbegainedat60℃,andtheH2Sconversionratewasenhanced.TheoptimumadditionqualityofCe(NO3)3was0.08gto50mlFe3+solution.

  • 标签: HYDROGEN SULFIDE liquid phase CATALYTIC OXIDATION
  • 简介:据行业网站报道,台湾烨联百分百转投资子公司“福建联德企业”4条矿热炉(RKEF)镍铁生产线陆续运转,可于2月份全部投产,未来全产能可达到20万吨,可提供不锈钢厂炼钢使用。

  • 标签: 生产线 投产 镍铁 福建 预计 行业网站
  • 简介:TheeffectsofUVAphotoirradiatedCe(Ⅳ)dopedTiO2nanoparticle(CDTP)onratcoloncarcinomacellline(C26)growth,cellcycledistribution,andmorphologywerestudiedbyMTTassay,FlowCytometry,andfluorescentstaining.Theresultsindicatethatabout64.6%cellsarekilledafter24hby180μg·ml-1CDTPwhen8minexposedtoUVA,over90%deadfor30mingroup,relativeto18.7%,41.5%ofTiO2atthesameconditionrespectively.Hoe33258stainingofthefixedcellsrevealstypicalapoptoticstructures(apoptoticbodies),andcellsarearrestedinG0/G1phase.

  • 标签: CERIUM DOPING TiO2 NANOPARTICLE TUMOR cell
  • 简介:ThemorphologyandcorrosionbehaviorofNi/Al2O3compositecoatingspreparedusingdouble-pulsedelectrodepositingtechniqueafteroxidizedunder800℃NaCldepositinairenvironmentwereanalyzedbyscanningelectricalmicroscope(SEM),X-raydiffraction(XRD)andenergydispersivespectrum(EDS).TheresultsshowedthatthecorrosionofallcompositecoatingswasacceleratedunderNaCldeposits,andthecorrosionproductswereratherporouswithpooradherencetothematrix.Al2O3particlesinthecoatingscanrefinethegrainsizeandimprovethehightemperaturecorrosionresistanceofthecoatings.Withinthetestscope,themoreAl2O3particlesinthecoatings,thelowercorrosionratescouldbeobtained,andthecorrosionmechanismwasalsodiscussed.

  • 标签: NI/AL2O3 composite coatings ELECTRODEPOSITION NACL corrosion
  • 简介:确定了合金成分,制定了中频感应熔炼工艺,开发了保证合金性能和质量熔炼成分、成分均匀性以及杂质元素(O、N、H)精确控制技术;确定了MBA-2合金铸造工艺、挤压工艺,最终产品各项性能指标均满足国标要求,形成了从合金熔炼、铸造、挤压及性能测试等关键工艺及技术。

  • 标签: MBA-2 同步器齿环管材 熔铸 挤压 检测
  • 简介:日前,中国铝业青海分公司两项发明专利获国家知识产权局授权。发明专利“一种铝及铝合金扁锭锯屑收集回炉重熔方法”,工艺流程为通过离心式轴流风机收集锯屑,由螺旋送料装置锯屑输送到压实装置挤压模具内,挤压成成锯屑压块,锯屑块转运、安装渣箱、残留铝液浇铸、冷却、废铝重熔。本发明工艺流程简便,操作容易,用于铝锭锯屑收集、压实、浇铸设备简单合理,成本低,效率高。

  • 标签: 国家知识产权局 发明专利 铝业 授权 青海 工艺流程