欢迎来到天天文库
浏览记录
ID:32467348
大小:2.16 MB
页数:49页
时间:2019-02-06
《铁氧体非晶纳米晶复合材料磁粉芯制备与软磁性能》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、摘要铁基非晶纳米晶合金的磁导率、激磁电流和铁损等软磁性能优于硅钢片,价格便宜,因而广泛应用于配电变压器、中频变压器、大功率电感、电抗器等。研究如何改善其磁性能具有重大意义。本文主要针对Fe73.5CulNb3Sil3.589、Fe78Sil389两种不同成分的铁基纳米晶铁氧体复合材料磁粉芯的磁导率和品质因数进行了系统地研究。首先,开发了可行的低温烧结成型的锰锌铁氧体制备工艺;然后研究了铁氧体溶胶量、热处理工艺及测试温度等因素对复合材料磁粉芯软磁性能的影响情况,找到了其影响规律。研究表明,随着铁氧体溶胶量的增加,磁粉芯的磁导率减小,而Q值却随铁氧体溶胶量的增加缓慢增大。Fe73
2、.5CulNb3Sil3.589/铁氧体复合材料磁粉芯在热处理工艺500℃X2d'时,测试频率为500KHz时,磁导率达到最大值60。其品质因数Q值在200KHz~1000KHz频段中,具有波动性,Q值在500KHz时达N51。测试温度对复合磁粉芯的磁导率和品质因数均有影响,测试温度从30℃升高到80℃时,磁导率从60.1降低到58.4,变化率为2.8%,而品质因数从59下降到54。当铁氧体溶胶量为7%、热处理工艺为2小时500℃及30℃的测试温度等因素下Fe78Sil389/铁氧体复合材料磁粉芯的磁导率在1MHz时达到最大值32,Q值在500KHz达到最大值30。关键词:磁
3、粉芯,非晶,纳米晶,Mn.Zn铁氧体,磁导率AbstractTheamorphousandnanocrystallineFe.basedalloyhasbetterthesoftmagneticproperties,suchasmagneticconductivity,magneticelectricity,Fe-lossandSOon,thanSi.steelslice,andmuchcheapeLSOarewidelyusedindistributiontransformer,IFtransformer,high.powerinductor,reactorandSOon.
4、Thereisgreatsignificanceofstudyingonhowtoimprovethemagneticpropertiesofamorphousandnanocrystall。-ineFe-basedalloy.ThemagneticconductivityandqualityfactorofthetwodifferentcomponentscompositeferriteCOre,Fe73.sCulNb3Sil3.589andFe78Sil389,weremainlysystemallystudiedinthispaper.Firstofall,thepre
5、parationcraftoflowtemperatureagglutinationformationofMn.ZnferritesWasdeveloped.ThentheinfluencefactorofferriteSol,heattreatmentprocessandtestingtemperaturetothesoftmagneticpropertiesofcompositemagneticcore,werestudied,theirruleshadbeenfound.TheresultsshowthatmagneticpermeabilityoftheCOrerat
6、edecreasedandtheQvalueslightlyincreasedwiththeincreasingofquantityofferriteS01.Magneticconductivityofcompositemagneticcorewillreachthemaximum,60,whileheattreatmentprocessbeing500。Cfor2hours,andthetestfrequencybeing500KHz.QualityfactorQofcompositemagneticCOrefluctuateinthefrequencyrangeof200
7、KHztolOOOKHz,themaximumvaluesofqualityfactorreached51in500KHz.Testtemperatureaffectedboththemagneticconductivityandthequalityfactorofthecompositemagneticcore.Whiletesttemperatureincreasedfrom30'Cto80。C,themagneticconductivitydecreasedfrom60.1to58.4,thech
此文档下载收益归作者所有