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1、氣霧化法制備Fe-6.5%Si-x%Ni合金粉末及其性能的研究王山山胡強(qiáng)趙新明盛艷偉趙文東劉英杰北京康普錫威科技有限公司摘要：采用氣霧化法制得TFe-6.5%Si-x%Ni(x=0,0.2,0.5,0.8,1.0;質(zhì)量分?jǐn)?shù))金屬軟磁合金粉末，對(duì)合金粉末進(jìn)行絕緣包覆處理后壓制成磁粉芯進(jìn)行磁性能檢測(cè)，磁粉芯尺寸為27mmX15mniX5mm,壓制壓力為1GPa。利用激光粒度分析儀、掃描電子顯微鏡(SEM)、X射線衍射儀(XRD)和軟磁交流分析儀對(duì)粉末的粒度分布、形貌、相組成和磁性能進(jìn)行檢測(cè)和分析。結(jié)果表明:在霧化過(guò)程中，隨著Ni元素添
2、加量的增加，金屬液粘度增加，霧化時(shí)間變長(zhǎng)，粉末顆粒尺寸增大,中位徑d50從21.04um增大到3&62urn;粉末為球形或近球形，部分粉末表而有衛(wèi)星球;粉末為單相a-Fe相，表明Ni元素以固溶體形式溶入基體晶格，造成晶格畸變，增加了合金粉末的內(nèi)應(yīng)力；隨著Ni元素含量的升高，矯頑力先升高后降低，添加1.0%Ni時(shí)為最優(yōu)值307.9A-m-1(0.05T,100kHz),振幅磁導(dǎo)率先降低后升高添加1.0%Ni時(shí)為最優(yōu)值15.7(0.05T,100kHz),且在頻率達(dá)到80kHz時(shí)略有升高，磁損耗先升高后降低，在添加1.0%Ni時(shí)為最優(yōu)
3、值4595mW?cm-3(0.05T,100kHz)。關(guān)鍵詞：氣霧化；金屬軟磁;合金粉末;磁損耗;作者簡(jiǎn)介：王山山(1989-),男，河北滄州人，碩士研究生，研究方向:氣霧化制粉及其粉末磁性能研究;E-mail:wangshanl9901221@163.com;作者簡(jiǎn)介：胡強(qiáng),教授；電話:13911188696;E-mail:hqbpu@263.net收稿日期：2016-03-14基金：北京市科技新星計(jì)劃項(xiàng)目(Z141103001814079)資助PerformanceCharacterizationofGas~AtomizedF
4、e~6.5%Si-x%NiPowdersWangShanshanHuQiangZhaoXinmingShengYanweiZhaoWendongLiuYingjieBeijingCOMPOAdvancedTechnologyCo.,Ltd.;Abstract：Fe-6.5%Si-x%Ni(x=0,0.2,0.5,0.8,1.0;massfraction)softmagneticalloypowderswereproducedbygasatomizationtechnologyandpressedintomagncticcoresf
5、ormagncticpropertiesdetection.Thesizeofthecoreswas27mmX15mmX5mmandthepressingpressurewas1GPa.Laserparticlesizeanalyzer,scanningelectronmicroscopy(SEM),X-raydiffraction(XRD)andsoftmagneticACanalyzerwereusedtodetectandanalyzetheparticlesizediffraction,morphology,phaseco
6、mpositionandmagncticproperties.Theresultsshowedthat,intheprocessofatomization,theatomizationtimeincreasedwiththeincreaseoftheamountofNiadditionduetotheimprovementofviscosityofthealloy.AndtheparticlesizeincreasedwiththeincreaseoftheamountofNiaddition,andthemediandiamet
7、erincreasedfrom21.04to38.62um.Thepowdersweresmoothandsphericalinshapewithafewsatelliteballscladdedtothesurface,a-FediffractionpeakswerethesinglephasefoundinthepowderswhichindicatedthatNiatomsgotintothebaseironlatticeassolidsolution.Thecoerciveforcerosefirstandfelllate
8、randthebestvaluewas307.9A?m-1with1.0%Niadditionat0.05Tand100kIIz.Theamplitudcpermeabilityfellfirstandroselaterandthebestvalu
