简介:Baosteel's5mheavyplateplantwassuccessfullytestedonMarch1,2005.Sincethen,theHeavyPlatePlantofBaosteel(hereinafterreferredtoas'theplant')hasbeenencouragingitsemployeestostudyandtracetheadvancedheavyplatetechnologies,tryingtofindouttherulesofheavyplateproductionanditsqualitycontrol.TheplanthasgraduallymasteredthismodernheavyplateplantandensuredthatBaosteel'sproductionofheavyplatesgrewyearbyyear,with1.41Mtproductputinstoragein2007.Theplanthasfocusedondevelopingnewtechnologiesandproducts,meanwhileenhancingitscapacity.Ithasproducedaseriesofplateproducts,whichcanbeusedinmanufacturingshiphulls,pipelines,bridges,buildings,boilersandpressurevessels.
简介:Thenoveleomplexesofalkaliandrareearthmetalwithperiodatehavebeenpreparedforthefirsttime.ChemicalanalysisindicatesthatthecompositionofthecomplexesisM2LnIO6·xH2O(M=Li,Na,K;Ln=Pr,Tb),andallofthecomplexeshavebeencharacterizedbyUV-Visible,IRspectroscopicstudies,susceptibilitymeasurementsandthermalanalysis.
简介:TheLa-CosubstitutedSr_(1–x)La_xFe_(12–x)Co_xO_(19)(x=0–0.5)ferriteswithappropriateBi_2O_3additivewerepreparedbyconventionalsinteringmethodandmicrowavesinteringmethodatlowsinteringtemperaturescompatiblewithLTCC(lowtemperatureco-firedceramics)systems,andtheirsinteringbehaviorwaschieflyinvestigated,includingthecrystalstructure,saturationmagnetizationMs,magneticanisotropyfieldHa,intrinsiccoercivityHci,andCurietemperatureTC.ExperimentresultsclearlyshowedthatthepureM-typecrystalphasewassuccessfullyobtainedwhentheLa-Cosubstitutionamountxdidnotexceed0.3.However,thesingleM-typephasestructuretransformedtomultiphasestructurewithfurtherincreasedx,wheretheM-typephasecoexistedwiththenon-magneticphasesuchasα-Fe_2O_3phase,La_2O_3phase,andLaCoO_3phase.AppropriateLa-CosubstitutionimprovedtheMs(〉62emu/g),Ha(〉1400kA/m),andHci(〉320kA/m)fortheferriteswithxvaryingfrom0.1to0.3,buttheTCdecreasedwithincreasingsubstitutionamount.Moreover,themicrowavesinteredferritescouldprovidelargerHciandsimilarMscomparedwiththeconventionalsinteredferrites.
简介:La公司代替了M类型钡铁酸盐(欺骗)由传统的稳固的状态被准备在低温度(1173K)的方法和sintered。X光检查衍射(XRD),扫描电子显微镜学(SEM)和颤动的样品磁强计(VSM)被采用在样品的结构和磁性上调查La公司的影响。由在为在空中的6h的1173K的sintering,有Ba(LaCo)xFe122xO19(x=0.00.5)的化学作文的单个阶段M类型钡铁酸盐被形成。M-H曲线证明钡铁酸盐的磁性被La公司替换显然完成。浸透磁化(女士)和coercivity(Hc)分别地到达了65.15Am2/kg和4165Oe的最大的价值。这行为被归因于La公司替换和粒子尺寸的地点。SEM表明铁酸盐粒子的形状被La公司替换影响。