简介:Hexagonplate-likeAl8B4C7powdersweresuccessfullysynthesizedusingamixtureofdiborontrioxide,activatedcarbonandaluminumoraluminabyacarbothermalreductionprocess.TheeffectofAlsourceandstartingmaterialsadditionsonsynthesisofAl8B4C7wasinvestigated.ThephasecompositionandmicrostructureofAl8B4C7powderwerecharacterizedbymeansofXRD,SEMandEDS.ThemainphasecompositionsoftheproductssynthesizedfromAl,B2O3andactivatedcarbonareAl8B4C7andAl2OC.Al2O3canreplaceAltosynthesizeAl8B4C7.Al8B4C7grainssynthesizedfromAl2O3,B2O3andactivatedcarbonarehexagonplate-likeandhaveathicknessof10μmandasizeofabout100μm.
简介:<正>TecnonOrbiChemandPUWorldinviteyoutojoinusinXiamen,Chinaforthe7thInternationalPolyurethaneSummiton7-8November2013.Theglobalpolyurethaneindustryhasdemonstrateditsinnovativeapproach-promotingnewapplicationsandtechnologiesandpushingforwardbio-baseddevelopments.However,theindustrystillfaceshugechallengesincludingaslowdowninthekeyChinesePUmarket,ongoingfragilityofthe