简介：Pr2Fe14B-La2Fe14B系统被衍射(XRD)，微分扫描热量测定(DSC)和扫描电子显微镜学(SEM)与精力装备了的X光检查粉末调查散X光检查光谱学(版本)。水晶结构参数被完整侧面的Rietveld精炼决定。结果揭示了那所有合金(Pr1-xLax)2Fe14B使Nd2Fe14有空格组P42/mnm的B类型结构并且形成了连续固体在x=0.0之间的解决方案并且1.0。格子参数一，c，单位房间体积V和c/a比率与La集中线性地增加了。由thermogravimetry分析决定了，居里温度(TC),阶段转变温度和融化的温度(Pr1-xLax)2Fe14B在La内容之上线性地减少了。基于DSC大小和X光检查粉末衍射考试的结果，Pr2Fe14B-La2Fe14B系统被建立。

简介：在市场经济的大海洋中,大型黑色冶金矿山企业只有采用多角化经营,开拓新的经营领域,占领新的市场,才能经得住市场风浪的摔打,才能在困难的环境中长期生存稳定发展下去。

简介：广西贺州地处湘粤桂三省（区）结合部，既是大西南东进粤港澳和出海的重要通道，也是广西接纳粤港澳经济辐射及产业转移的前沿地带。该市采取“政府牵头，以商招商”的做法，主动承接东部产业转移。今年以来，该市对东部产业转移特点进行研究，精心筛选出具有贺州特色的电子、家具、稀土三大优势产业项目，出台了《贺州市鼓励电子、家具、稀土产业发展暂行办法》，围绕电子、稀土、家具三大重点产业推荐和招商，延长产业链，

简介：Magnetizationanddemagnetizationcurvesandhysteresisloopsapplieddifferentmagnetizing.fieldsinsinteredNd-Fe-BandNd-Dy-Fe-Bmagnetsfromthermallydemagnetizedanddcfield-demagnetizedstateswereinvestigatedattemperaturesofupto150℃.Thefirst-quadrantremagnetizationcurvesandthecurvesofcoerciveforces_MH_CversusrernagnetizingfietdsH_mfromdcfield-demagnetizedstateatroomtemperatureshowasteparoundmagnetizingfieldasabsolutevalueofthemaximumintrinsiccoercivity.Thestepsof_MH_C-H_mcurvesshiftedtolowerremagnetizingfieldsandtheshapesofmagnetizationcurveschangedfromsteptypetoprecipitoustypewhentemperaturewentupto100～150℃orafterthespecimenwasthermallydemagnetizedatatemperaturehigherthantheCurietemperature.Thesteepriseofkneecoereivitywithincreasingmagnetizingfieldisbehindthatof_MH_C.NotethatthemagnetichardeninginsinteredNd-Fe-Bmagnetsiscontrolledbypinningofdomainwalls.

简介：阐述了非高炉炼铁技术的分类及各自的发展现状,详细介绍了主要的工艺流程包括直接还原、熔融还原以及粒铁法,并分析了流化床在熔融还原中的应用以及熔融还原-直接还原联合流程。宝钢Corex的建设与投产,还应追踪Finex技术发展,关注规模化后HIsmelt,积极消化吸收熔融还原新技术,以进一步为企业创造价值。

简介：代号为Ｂ３１２的苯乙烯膦酸单仲烷基（Ｃ１１－１３）酯的实用性质表明，Ｂ３１２符合工业萃取剂所应具备的条件。

简介：通过生产过程参数对比,查找宏观原因,并进行解剖,用SEM扫描电镜进行能谱分析,定性分析AAR-B车轮超声检测缺陷的原因,制定改进措施,使产品质量稳定。

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简介：本文针对当前行业出现频繁、客户投诉较多的非承重外墙的质量通病,解析了非承重外墙的主要形式,提出了外墙设计施工中的通用要求,强调了非承重外墙质量通病的设计措施和构造措施。并提出了复合性外墙的建议和详细方案,以防治砌体工程的裂缝和渗漏。

简介：工信部召开了产业转移指导目录编制工作座谈会。会议透露，产业转移指导目录有望在今年年底前完成。这一目录出台将进一步明确电解铝等有色金属产业转移方向。

简介：Microporoustitaniumdioxidefilmswerepreparedbythesol-gelmethodsonglasssubstrates,usingtetrabutyltitanateassourcematerial.Inordertoabsorbthevisiblelightandincreasethephotocatalyticactivities,differentconcentrationsofneodymiumions(Nd/Timolarratiowas0.5%,0.7%,0.9%,and1.1%respectively)wereaddedintothesol.X-raydiffraction(XRD),X-rayphotoelectronspectros-copy(XPS),andatomforcemicroscopy(AFM)wereappliedtocharacterizethemodifiedfilms.Akindoftypicaltextileindustrypollutant(RhodamineB)wasusedtoevaluatethephotocatalyticactivitiesofthefilmsundervisiblelight.TheresultsshowedthattheactivitiesofthefilmswereimprovedbydopingNdionsintothesol.

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：对10B21冷镦钢盘条出现的冷镦开裂现象,用光学显微镜、扫描电镜、直读光谱仪对缺陷部位进行了显微组织、化学成分等分析。结果表明,冷镦开裂是由钢坯裂纹缺陷所导致,且通过Ti元素的加入,杜绝了钢坯裂纹的产生。

简介：InordertoimproveandstabilizethemagneticpropertiesofnanocompositeNd2Fe14B/α-Femagneticalloysbyacompositionaladjustment,smallamountofDyand/orCowasaddedtoNd9Fe84B7alloys.DTAanalysisontheamorphousofthealloystookplaceasthesoftmagneticphaseswerecrystallized,andthenthehardmagneticNd2Fe14Bwasprecipitatedfromthem.Whileα-Feandametastable1:7(TbCu7-type)phasewereformedsimultaneouslyinDyandCo-freealloys,theywerecrystallizedseparatelyatdifferenttemperaturesafterDyorCowasadded.ThisphaseseparationoccurredmoreclearlyintheDy-treatedalloysandtheothersoftmagneticphaseFe3BwasalsostabilizedbyDyand/orCo.The1:7phasethatwasstabilizedbyDyand/orCowasnoteliminatedat700℃,decreasingmagneticpropertiesofthealloys.Itwaseventuallydisappearedabove725℃,butFe3Bwasnoteliminatedevenat750℃whenDywasaddedmorethan0.5at%orCowasaddedmorethan2.0at%.AmountofNd2Fe14BinthealloystendedtoincreaseasDyadditionincreased,whereasCoadditiondidnotleadtoanyappreciablechangeintheratioofα-FeandNd2Fe14B.Moreover,DyadditionapparentlyincreasedcoercivityofanalloywhileCoadditionhadabeneficialeffectonremanence.ThegrainsintheDytreatedalloyswereusuallyfinerthanthoseintheCo-treatedalloys.Thegrainsizeofbothα-FeandNd2Fe14Binthealloysexhibitingmr≥0.72wasintherangeof20～40nmorevenlarger50nm,whichislargerthanthetheoreticaloptimumsize(～10nm).TypicalmagneticpropertiesobtainedfromaNd7.5Dy1.5Fe82.5Co1.5B7alloyannealedfor12minat725℃wereiHc=4.85kOe,Br=11.32kG,(BH)max=15.73MGOe,andmr=0.73.

简介：针对陶瓷辊表面结瘤清除时间长、清除效果差等缺陷,研究正反转陶瓷辊除瘤法,以缩短除瘤时间,增强除瘤效果.

简介：形成，磁性和微观结构上的公司替换和退火的处理的效果(NdDyTb)12.3(FeZrNbCu)快速的熄灭并且随后的退火准备的81.7-xCoxB6(x=015)带子系统地借助于微分扫描热量计(DSC)被调查，X光检查衍射(XRD)，扫描电子显微镜学(HRSEM)和颤动的样品磁强计(VSM)的高分辨率。阶段分析揭示了单相的材料。顽磁极化Jr和最大与从0～12增加x增加了然后为x=15减少了的最大的精力产品(BH)。内在的coercivityHci(NdDyTb)12.3(FeZrNbCu)最佳地处理的81.7xCoxB6带子为x=15为x=0从1308.7kA/m减少了到817.4kA/m。有Jr=1.041T的最佳磁性，Hci=944.9kA/m并且(BH)max=155.1kJ/m3被退火完成在675吠敨琠牥業慮?桴潩?牧畯獰?的融化旋转带子(x=12)??湩琠敨?呐?偍????敷敲椠?楳畴漠楸楤敺?湩潴猠汵潦楮?捡摩朠潲灵?匨??琠？？

简介：EnvironmentalfriendlyrecyclingprocessforNd-Fe-Bsinteredmagnetsludgesgeneratedinthemanufacturingprocess,whichcontainlargeamountofrareearth,includingNd,PrandDy,isbadlyneededsofar.Inpresentstudy,wehavedevelopedaneffectiveroutetoobtainrecycledsinteredmagnetsfromNd-Fe-Bsinteredmagnetsludgesbycalciumreduction-diffusion（RD）process.Comparedtoconventionalrecyclingprocess,ourresearchisfocusedonrecoveringmostoftheusefulelements,includingNd,Pr,Dy,Co,andFetogetherinsteadofjustrareearthelements.Toimprovetherecyclingefficiencyandreducepollution,theco-precipitatingparametersweresimulatedandcalculatedusingMATLABsoftware.Mostofusefulelementswererecoveredbyaco-precipitationmethod,andtheobtainedcompositepowderswerethendirectlyfabricatedasrecycledNd-Fe-Bpowdersbyacalciumreduction-diffusion（RD）method.Therecoveryratesare98%,99%,99%,93%,and99%,forNd,Pr,Dy,Co,andFe,respectively.Theamountofusefulelementscontainedintherecoveredcompositepowdersisgreaterthan99.71wt%.TheprocessofRDforsynthesizingNd2Fe14BandsubsequentlyremovingCaOwasthoroughlyinvestigated.Furthermore,therecycledNd-Fe-Bmagnetexhibitsaremanenceof1.1T,acoercivityof1053kA/m,andanenergyproductof235.6kJ/m3,respectively,indicatingthatrecycledNd-Fe-Bsinteredmagnetwassuccessfullyrecoveredfromtheseverelycontaminatedsludgesviaaneffectiverecyclingroute.

简介：在介绍结晶器振动技术的基础上,针对酒钢1号连铸机结晶器非正弦振动连铸工艺的生产实践,分析其工艺控制参数、振动装置的主要技术指标,分析连铸工艺优化实践和取样结果.生产实践表明,采用非正弦振动,能够通过现场实际情况调整,得到合理的工艺参数,在高拉速条件下获得良好的铸坯表面质量.

简介：YPO_4phosphorssingle-dopedwithSb~（3＋）orGd~（3＋）andco-dopedwithSb~（3＋）andGd~（3＋）werepreparedbyasolid-statereactionmethod.Thephasepurity,morphology,photoluminescenceexcitationandemissionpropertiesofthepreparedphosphorswereinvestigated.TheresultsshowedthatSb~（3＋）couldsensitizeGd~（3＋）intheco-dopedphosphorswhichmadethephosphorsexcitablebyshort-waveultraviolet（UV）atawavelengthbetween220and260nm.Under253.7nmexcitation,theco-dopedphosphorsY_（1–x–y）PO_4：Sb~（3＋）x,Gd~（3＋）yshowedstrongemissionofGd~（3＋）atawavelengthof312nmwhoseintensitychangedwiththedopingconcentrationsofGd~（3＋）andSb~（3＋）.TheoptimizedY_（0.77）PO_4：Sb~（3＋）0.07,Gd~（3＋）0.16phosphorshowedanintensitycomparabletocommercialLaPO_4：Cephosphor（UVB-315）,makingitapotentialcandidateformercurylow-pressuredischargenarrow-bandUV-Bemittinglamps.

简介：介绍SO2非稳定态氧化技术的工艺流程及特点,该技术在沈阳冶炼厂制酸系统的应用及改进,并取得了明显的节能效果。