高矯頑力低溫度系數(shù)燒結(jié)ndfeb材料的研究

1、贏疊硒左低顯廑丕數(shù)燒結(jié)盟塑塑撾料的硒窺Stud／ofsinteredNdFeBmagnetswithhighercoercivityandlowertemperaturecoefficient博士后姓名譚壹鹽一流動站(～“一級學(xué)科)名稱植抖獵堂皇工捏一專業(yè)(二級學(xué)科)名稱撾料堂一——合作導(dǎo)師(企業(yè))杜疊蝰直王一合作導(dǎo)師(學(xué)校)』蘭蜜數(shù)援一一研究工作起始時間～2QQ壘生一壘旦研究工作期滿時問2QQ魚生壘旦提交報告日期2QQ魚生量旦一浙江人

2、學(xué)博士后研究工作報告AbstractSinteredNdFeBmagnetsareusedinmanyfieldsduetotheirhighmagneticproduct，lowCOStandprice，andgoodmachinabilityWiththeexpendingoftheirapplicationarea，NdFeBmagnetswithgoodcombinationpropertyespeciallyhightempe

3、ratureresistanceperformance，arerequiredbypermanentmagneticmotorsSinteredNdFeBmagnetswithhighcoercivityandlowtemperaturecoefficient，whichcouldbeusedathightemperature，suchasmorethan200。C，shouldberequiredinmanyseverefiPldsS

4、interedSm—Comagnetscanbeusedatthetemperattuethatmorethan300。C，butcostmorethanNdFeBmagnets，andhavelowermagneticproductAtthesaliletime，sinteredNdFeBmagnetshavebettermachinabilitythansinteredSm—ComagnetsSo，sinteredNdFeBmagn

5、etswhichCanbeusedat200300℃areasignificantareatobedevelopedAtypeofsinteredmagnetswithhi出coercivityandlowtemperaturecoefficientisproducedinthisprojectbybeingusedatraditionalcommoningotprocesstoproduce，afteradjustingalloyco

6、mpositionandproducingprocessThemagnetscouldbeusedat220C，andtheir(BH)mismorethan31MGOeAndsomeconclusionshavebeengottenasfollowingafterthisresearching1)SinteredNdFeBmagnetswithhighcoercivityatroomtemperaturedon’talwayshave

7、highcoercivityathightemperature，suchasat220。CSo，ifsinteredNdFeBmagnetsarerequiredtobeusedathightemperature，whosecoercivityHcjcouldbeliftedandthecoefficientofHej，I13HqI，couldbedecreased2)SinteredNdFeBmagnetswithhighcoerci

8、vityandlowtemperaturecoefficientcouldbeproducedbythetraditionalcommoningotprocess，SO，manyproducerscouldnotaddednewmachinesandthisprocesshasmorechancetobeexpendedStripcastingprocesscouldbeusedtolifttheremanenceandmagnetic

9、productofsinteredNdFeBmagnets，butthisprocesswouldbecompaniedwithaoptimizedmillingandsinteringprocess3、SinteredNdFeBmagnetswimhighcoercivitywouldhavehighdensitytogainbigremanenceandmagneticproductInageneralwaythedensitywo