简介：UpontheinvitationbytheRefractoriesAssociationofGreatBritain,DMGMidiaLtd,UnitecCeramicsLtd,LAEISBucherGmbHandNaberthermCeramicsLtd,theAssociationofChinaRefractoriesIndustry(ACRI)dispatchedadelegationconsistedoftenpersonstopayanofficialvisitattheaboveorganizationsandcompaniesduringOctober9thto25th,2001.Thefollowingarethehighlights.

简介：EffectofrareearthoxideonpropertiesofCaO-MgO-SiO2systembio-solubleceramicfibers.WangXitang,LiuHao,ZhangBaoguo,etal.(321-324).-Rareearthoxide,Ceramicfiber,Bio-solubility,Crystallizationbehavior-CaO-MgO-SiO2systembio-solubleceramicfibersweremadebymelting-spinningprocessusingnaturalwollastonite,talc,andquartzsandasmainstartingmaterials,andrareearthoxideasadditive.Theviscosityofthemelts,bio-solubilityandcrystallizationbehaviorathightemperaturesoftheceramicfiberswereinvestigated.Theresultsindicatethattheintroductionofrareearthoxide:(1)broadsthefiber-formingtemperaturerange;(2)reducesthesolutionspeedofCaO-MgO-SiO2systembio-solublefibersinlungliquidbutdoesn'tchangethebio-solubleattribute;(3)strengthensthenetworkstructureofthefibersandrestrainsthecrystallizationbehaviorathightemperatures.

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简介：Inthepresentpaper,novelsidewallmaterialsforaluminumreductioncellwerepreparedinairusingmagnesiaandmagnetiteasstartingmaterials.ThesinteringbehaviorsofthespecimenswereinvestigatedbymeansofX-raydiffraction(XRD)andscanningelectronmicroscope(SEM).AndcorrosiontestsinaNa_3AlF_6-AlF_3-K_3AlF_6bathwereconductedtoevaluatetheelectrolytecorrosionresistance.TheresultsshowthattheFe_3O_4phaseistransformedintoFe_2O_3athightemperatures,whichinturnreactswiththeMgOaddedtoformMgFe_2O_4spinel.AndwithincreasingtheMgOcontentfrom0to30mass%,densificationofthespecimensdecreasesmainlyduetolargervolumeexpansionresultingfromformationofmoreMgFe_2O_4.ThecorrosiontestsshowthatcorrosionlayersareproducedinalltheMgOaddedspecimens.However,forspecimenscontainingMgFe_2O_4phaseonly,Mg(Al,Fe)_2O_4compositespinellayersarealsogenerated,whichremarkablyimprovethecorrosionresistanceofthespecimens.