简介:1IntroductionThenickelaloysandcomplexesarewidelyusedasmagnetic,optical,nuclearandsuperconductingmaterials[1,2].Manynickelcom...
简介:1IntroductionNorfloxacinbelongstothecompoundoftheseriesofcarbostyrilcontainingfluorine.Itisabroadspectrumantimicrobial,and...
简介:通过天津新宇彩板厂三期工程建设中的1,2,3,4号镀锌线和1,2号彩涂线共6条生产线的安装调试期间,在国外先进技术的基础上学习和研究张力辊的控制技术。本文分析了张力产生的原因和影响张力稳定的因素,给出了生产线上传动辊张力控制方案。
简介:ThemagnetizationreversalmechanismsforNinanowireswithdifferentdiameterswereinvestigatedbymi-cromagneticsimulations.Theresultsshowthatthereversalmechanismsaresignificantlydependentonthediameterofwire.Forverythinwires,thereversaloccursbypseudo-coherentrotation.Withincreasingdiam-eter,magnetizationreversaltakesplaceviadifferentnucleation(thetransversedomainwallandthevortexdomainwall)andsubsequentpropagation.Thereasonoftransitionfromthetransversedomainwalltothevortexdomainwallisgivenbyanalyticalstudies.Withfurtherincreaseofthediameter,thereversalnucleardomainwallbecomestundish-shapedform.Asthediameterincreases,thewidthofwallbecomeslarger.
简介:PrecipitationstudywascarriedoutinNi-35at.pctCralloybymeasuringelectricalresistivityatdifferentageingtemperaturesandlongageingtimes.Duringageing,itwasobservedthatelectricalresistivityinitiallyrosewithageingtimeandthenfellafterverylongageingataconstanttemperature.TheinitialincreaseinresistivityduringageingmaybeattributedtotheformationofGPzones/Cr-richprecipitatesatearlystagesbynucleationprocessanddecreaseinresistivity,andafterattainingamaximum,isduetothegrowthofprecipitateparticlesandsubsequentlybycoarseningoftheseprecipitates.TheresultsofelectricalresistivitymeasurementsduringageingwereconfirmedbyX-raydiffractionanalysisindicatingtheformationofaCr-richphaseandaCr3Ni2phaseintheNimatrix.
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