简介：WearofazirconiagraphiteslagbandmaterialbymoldslagduringcastingofaTRIPsteelgradewasinvestigatedonwornspecimenswithrespecttocorrosionanderosion.Corrosiondissolutionofboththestabilizeroxideandthezirconiaisdecisive.Oxidationisdominatinggraphitewearwhereasapossibledissolutionintheliquidsteelwasnotobservedtoplayanimportantrolehere.Theratioofoxidecorrosiontographiteoxidationdecreaseswithdecreasingverticaldistanceofthehotfacetothesteelbath.Unfortunatelyandcontrarytootherapplicationsofcarbonbondedrefractoriesinsteelindustrygraphiteexhibitstobewettedbymoldslaginthespecialcaseinvestigatedhere,itstillactsasarefractivecomponent,butonlypartlyasaninfiltrationinhibitor.Infiltrationisfollowedbyzirconiacorrosionthusreducingerosionresistance,butneverthelessalsogasphasetransportofslagcomponentsmaycauseexsolutionofthestabilizeroxideinun-infiltratedregions.

简介：TheSENforthinslabcon-castingiseasytobreakanddamagebecauseoftheoxidationduringpreheatingandapplication.TheenamelcoatingmaterialisgenerallyappliedonthesurfaceofSENtoavoidtheoxidation.Thecoatingmaterialwithbornglassandsiliconasmainstartingmaterialsandsilicasolasbinderwasstudied.ZrO2-CandAl2O3-Cmaterialscontaining15%carbonwereisostaticpressed,andheatedat600℃,900℃,1200℃,1500℃for2h,respectively.Theresultsshowthatthecoatingmaterialwith70%ofboronglassand30%ofsiliconbondedbysilicasolcanformdenserprotectionlayerintheabovementionedmaterialsattherangeof600-1500℃.Theoxidationarearatioandweightlossratiowiththecoatingaremuchlowerthanthosewithoutthecoating.

简介：SEN病毒广泛存在于人群中,输血是其重要传播途径之一,目前发现该病毒与非甲～戊型肝炎有较强相关性,但尚无足够证据表明SEN病毒就是非甲-非戊型肝炎的病原体.此文就SEN病毒的分子生物学特征、实验室检测、流行概况及传播、肝损害、输血后非甲-非戊型肝炎进展作一综述.

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