欢迎来到天天文库
浏览记录
ID:33663275
大小:6.63 MB
页数:71页
时间:2019-02-28
《金属铁诱导复相铁氧体材料的制备和磁性能》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、摘要六角铁氧体是一种广泛应用在微波信号处理领域的重要材料,如何大幅度调控饱和磁化强度和矫顽力一直是此类材料研究的重点。本文以金属铁作为诱发剂、采用放电等离子体烧结(SPS)技术制备了一系列饱和磁化强度和矫顽力均可大幅度调控的M型、W型和Z型钡铁氧体诱变复相铁氧体材料,重点研究了复相铁氧体的物相组成、结晶反应机制、显微结构和磁性能。通过优化SPS烧结的温度、保温时间和压力,确定了制备M型钡铁氧体(BaM)诱变复相铁氧体材料的优化SPS工艺为900℃、保温30min和压力20MPa。利用该工艺,以名义组成为xFe+BaFel2019(02、=0.1)的共沉淀前驱体制备了BaM诱变复相铁氧体材料。03、、保温30min和20MPa的SPS条件下,分别用金属铁粉与单相BaM、BaC02Fel6027(C02W)$tlBa3C02Fe2404l(C02Z)粉体构成的xFe+BaFel2019、xFe+BaC02Fel6027和xFe+BaaC02Fe2404l(04、时结晶反应为BaM与Fe生成Fe2Y和Fe304,Fe与Fe2Y生成BaFe204和Fe304;C02w诱变复相铁氧体随x增加其致密度逐渐增大、呸逐渐降低、鼠先增大后降低,物相组成为C02W、Ba2C02Fel2022(C02"19、CoFe204和Fe304时结晶反应为C02W与Fe生成C02Y、CoFe204和Fe304,为BaFe204、Fe304、CoFe204和C02Y时结晶反应为C02W与Fe生成CoFe204、C02Y和Fe304,Fe与C02Y生成BaFe204、Fe304和CoFe204;C02Z诱变复相铁氧体随x增加其致密度和皿增大5、、%降低,物相组成由C02Z、Fe304、BaFe204和C02Y组成,但x=1.0时C02Z消失,结晶反应为C02Z与Fe生成C02Y、Fe304和BaFe204。关键词:复相铁氧体,放电等离子体烧结,结晶反应机理,磁性能AbstractThehexaferriteiSallimportantmaterialwhichlSwidelyusedinmicrowaveprocessing,andhowtoregulatethesaturationmagnetizationandthecoercivityofthehexaferriteinlargeran6、geisasignificantresearchtopicinpreparingthismicrowaveprocessingmaterials.Inthispaper,sparkplasmasintering(SPS)techniquewasusedtosynthesizeaseriesofM—type.W-typeandZ—typebariumferritesinducedmultiphaseferritemateialsinlargerangetoregulatesaturationmagnetizationsandcoercivitieswit7、hmetalironas觚inducedagent.Thephasecomposition,crystallizationreactionmechanism,microsturctureandmagneticpropertiesofthemultiphaseferritematerialswerecomprehensivelystudied.ByregulatingtheSPSsinteringtemperature,holdingtimeandpressure,theoptimizedconditionisholding30minat9000Cand8、20MPaforsynthesizingM—typebariumferrite(BaM)ind
2、=0.1)的共沉淀前驱体制备了BaM诱变复相铁氧体材料。03、、保温30min和20MPa的SPS条件下,分别用金属铁粉与单相BaM、BaC02Fel6027(C02W)$tlBa3C02Fe2404l(C02Z)粉体构成的xFe+BaFel2019、xFe+BaC02Fel6027和xFe+BaaC02Fe2404l(04、时结晶反应为BaM与Fe生成Fe2Y和Fe304,Fe与Fe2Y生成BaFe204和Fe304;C02w诱变复相铁氧体随x增加其致密度逐渐增大、呸逐渐降低、鼠先增大后降低,物相组成为C02W、Ba2C02Fel2022(C02"19、CoFe204和Fe304时结晶反应为C02W与Fe生成C02Y、CoFe204和Fe304,为BaFe204、Fe304、CoFe204和C02Y时结晶反应为C02W与Fe生成CoFe204、C02Y和Fe304,Fe与C02Y生成BaFe204、Fe304和CoFe204;C02Z诱变复相铁氧体随x增加其致密度和皿增大5、、%降低,物相组成由C02Z、Fe304、BaFe204和C02Y组成,但x=1.0时C02Z消失,结晶反应为C02Z与Fe生成C02Y、Fe304和BaFe204。关键词:复相铁氧体,放电等离子体烧结,结晶反应机理,磁性能AbstractThehexaferriteiSallimportantmaterialwhichlSwidelyusedinmicrowaveprocessing,andhowtoregulatethesaturationmagnetizationandthecoercivityofthehexaferriteinlargeran6、geisasignificantresearchtopicinpreparingthismicrowaveprocessingmaterials.Inthispaper,sparkplasmasintering(SPS)techniquewasusedtosynthesizeaseriesofM—type.W-typeandZ—typebariumferritesinducedmultiphaseferritemateialsinlargerangetoregulatesaturationmagnetizationsandcoercivitieswit7、hmetalironas觚inducedagent.Thephasecomposition,crystallizationreactionmechanism,microsturctureandmagneticpropertiesofthemultiphaseferritematerialswerecomprehensivelystudied.ByregulatingtheSPSsinteringtemperature,holdingtimeandpressure,theoptimizedconditionisholding30minat9000Cand8、20MPaforsynthesizingM—typebariumferrite(BaM)ind
3、、保温30min和20MPa的SPS条件下,分别用金属铁粉与单相BaM、BaC02Fel6027(C02W)$tlBa3C02Fe2404l(C02Z)粉体构成的xFe+BaFel2019、xFe+BaC02Fel6027和xFe+BaaC02Fe2404l(04、时结晶反应为BaM与Fe生成Fe2Y和Fe304,Fe与Fe2Y生成BaFe204和Fe304;C02w诱变复相铁氧体随x增加其致密度逐渐增大、呸逐渐降低、鼠先增大后降低,物相组成为C02W、Ba2C02Fel2022(C02"19、CoFe204和Fe304时结晶反应为C02W与Fe生成C02Y、CoFe204和Fe304,为BaFe204、Fe304、CoFe204和C02Y时结晶反应为C02W与Fe生成CoFe204、C02Y和Fe304,Fe与C02Y生成BaFe204、Fe304和CoFe204;C02Z诱变复相铁氧体随x增加其致密度和皿增大5、、%降低,物相组成由C02Z、Fe304、BaFe204和C02Y组成,但x=1.0时C02Z消失,结晶反应为C02Z与Fe生成C02Y、Fe304和BaFe204。关键词:复相铁氧体,放电等离子体烧结,结晶反应机理,磁性能AbstractThehexaferriteiSallimportantmaterialwhichlSwidelyusedinmicrowaveprocessing,andhowtoregulatethesaturationmagnetizationandthecoercivityofthehexaferriteinlargeran6、geisasignificantresearchtopicinpreparingthismicrowaveprocessingmaterials.Inthispaper,sparkplasmasintering(SPS)techniquewasusedtosynthesizeaseriesofM—type.W-typeandZ—typebariumferritesinducedmultiphaseferritemateialsinlargerangetoregulatesaturationmagnetizationsandcoercivitieswit7、hmetalironas觚inducedagent.Thephasecomposition,crystallizationreactionmechanism,microsturctureandmagneticpropertiesofthemultiphaseferritematerialswerecomprehensivelystudied.ByregulatingtheSPSsinteringtemperature,holdingtimeandpressure,theoptimizedconditionisholding30minat9000Cand8、20MPaforsynthesizingM—typebariumferrite(BaM)ind
4、时结晶反应为BaM与Fe生成Fe2Y和Fe304,Fe与Fe2Y生成BaFe204和Fe304;C02w诱变复相铁氧体随x增加其致密度逐渐增大、呸逐渐降低、鼠先增大后降低,物相组成为C02W、Ba2C02Fel2022(C02"19、CoFe204和Fe304时结晶反应为C02W与Fe生成C02Y、CoFe204和Fe304,为BaFe204、Fe304、CoFe204和C02Y时结晶反应为C02W与Fe生成CoFe204、C02Y和Fe304,Fe与C02Y生成BaFe204、Fe304和CoFe204;C02Z诱变复相铁氧体随x增加其致密度和皿增大
5、、%降低,物相组成由C02Z、Fe304、BaFe204和C02Y组成,但x=1.0时C02Z消失,结晶反应为C02Z与Fe生成C02Y、Fe304和BaFe204。关键词:复相铁氧体,放电等离子体烧结,结晶反应机理,磁性能AbstractThehexaferriteiSallimportantmaterialwhichlSwidelyusedinmicrowaveprocessing,andhowtoregulatethesaturationmagnetizationandthecoercivityofthehexaferriteinlargeran
6、geisasignificantresearchtopicinpreparingthismicrowaveprocessingmaterials.Inthispaper,sparkplasmasintering(SPS)techniquewasusedtosynthesizeaseriesofM—type.W-typeandZ—typebariumferritesinducedmultiphaseferritemateialsinlargerangetoregulatesaturationmagnetizationsandcoercivitieswit
7、hmetalironas觚inducedagent.Thephasecomposition,crystallizationreactionmechanism,microsturctureandmagneticpropertiesofthemultiphaseferritematerialswerecomprehensivelystudied.ByregulatingtheSPSsinteringtemperature,holdingtimeandpressure,theoptimizedconditionisholding30minat9000Cand
8、20MPaforsynthesizingM—typebariumferrite(BaM)ind
此文档下载收益归作者所有