摘要
TooptimizethemagneticpropertiesofnanocompositeNd9Fe85B6magnets,theas-quenchedribbonswithdifferentmicrostructureswerepreparedatsixwheelvelocitiesfrom10to30ms-1throughrapidquenching,followedbyaseriesofannealingtreatmentsat550–800°Cfor5–10min.Itisfoundthatboththelargeinitialgrainsatlowcoolingrateandhighcontentofamorphousphaseathighcoolingratecausea-Fegrainscoarsening,whichleadstoadeclineinthestrengthofexchangecouplinginteractionandthedeteriorationofmagneticproperties.Inordertooptimizethemagneticproperties,theas-quenchedribbonsshouldbechosenwithrelativelysmallinitialgrainsaswellasasmallamountofamorphousphase.FornanocompositeNd9Fe85B6materials,theoptimizedmagneticpropertiesofHcj=446kAm-1,Br=0.86T,(BH)max=80kJm-3areobtainedforribbonspreparedat18ms-1afterannealingat620°Cfor5min.
出版日期
2014年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
