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Interaction of Microwave Magnetic Field With Materials

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Journal of Iron and Steel Research International 2012年第S2期19卷 683-686页

作者： yoshikawa noboru Tomotsugu Kato Shoji Taniguchi Graduate School of Environmental Studies Tohoku University Gradaute Student at Tohoku Univeristy

Microwave is an electromagnetic wave and consists of the electric and the magnetic *** microwave electric field interacts with dielectric materials and heat is generated due to the dielectric loss,which is a major mechanism of microwave heating of *** magnetic field interaction with materials has to be discussed in terms of two different *** first class is the induction current generation in(mainly)metallic materials, which gives rise the Joule heat,although the penetration distance into metals are limited within a microns or *** this article,a characteristic application of microwave induction heating of metal thin film is *** second class is the microwave interaction with the ferro(or ferri)magnetic *** of ferromagnetic resonance(FMR)is taken into consideration as the fundamental heating mechanism of the ferro-magnetic *** FMR heating behavior of Fe_3O_4 is *** is made for the phenomena observed in the experiments.

关键词： microwave magnetic field heating induction thin film ferro magnetic resonance

Combustion Synthesized Porous Body of Fe_3O_4/Al System by Controlled Microwave Heating and Heating Behavior of the Products

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Journal of Iron and Steel Research International 2012年第S2期19卷 673-678页

作者： LEE Chang Chuan yoshikawa noboru TANIGUCHI Shoji Graduate School of Environmental Studies Tohoku University School of Manufacturing Engineering Universiti Malaysia Perlis

Microwave-induced substitutional combustion reaction was utilized to fabricate porous ceramic composite from Fe_3O_4/Al powder *** porous composite body was obtained by controlling the combustion reaction progress in a 2.45 GHz single mode *** to the fabrication of the porous body,heating behavior of the powder mixtures were studied in the separated electric(E)and magnetic(H)*** addition,heating ability of the microwave fabricated porous product was also ***_3O_4 powder can be heated up easily in both maximum H and E field, but a better heating was observed in the maximum H *** of the mixtures ratio(mixing compositions), maximum H field shows better heating *** E-field heating,temperature of the Fe_3O_4 samples decreased sharply when Al powder was ***,the same phenomenon was not observed in the maximum H field heating. Thus,fabrication of the porous composite body was carrying out in maximum H *** an adequate control of the reaction progress,products with a porous structure consisting of well-distributed metal particles in the alumina and/or hercynite matrix were ***,heating of the fabricated porous composite body was also been successfully carried out in the maximum H *** phases and microstructure were the main factors influencing the heating ability of the porous composite body.

关键词： Fe_3O_4/Al system separated H and E field heating heating ability

Fabrication of Porous SiO_2·RO/SUS Composite Body for DPF (Diesel Particulate Filter) and Microwave Heating Behavior

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Journal of Iron and Steel Research International 2012年第S2期19卷 787-791页

作者： LEE Chang Chuan ICHIHASHI Yuma yoshikawa noboru TANIGUCHI Shoji Graduate School of Environmental Studies Tohoku University School of Manufacturing Engineering Universiti Malaysia Perlis Department of Materials Science and Engineering Tohoku University

Glass/stainless steel porous composite body were prepared by the polyurethane sponge replica method using slurries containing mixture of SiO_2-RO/30 vol%*** porous samples were obtained which consists of well-distributed stainless steel particles within the glass *** a microstructure is desired for the purpose as a soot particulate filters(DPF)utilizing microwave rapid heating in cold start *** ability of the fabricated porous composite body was carried out placing the specimen in the maximum H-field of a 2.45 GHz single mode applicator. Heating behavior of the samples was mainly influenced by the volume fraction of stainless *** heating rate was observed for samples with higher stainless steel *** to the different microwave absorbability of the materials, stainless steel particle in the porous matrix structure was firstly heated up by microwave and transferred the heat energy throughout the whole *** of the fraction of the stainless steel particle in the matrix structure led the better heating;however the strength of the samples decreased.

关键词： porous composite polyurethane sponge microwave heating

Recent Researches on Microwave Processing for Materials and Environmental Technology in Our Group

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Journal of Iron and Steel Research International 2012年第S2期19卷 665-668页

作者： yoshikawa noboru Keita Kawahira Kazuya Fujino Lee Chang Chuan Shoji Taniguchi Tohoku University

Microwave processing has been taken into consideration for various purposes,not only for cooking,drying and enhancement of solution reaction kinetics but also various high temperature *** the presentation,selected research projects conducted in our group will be *** first topic is the microwave processing for recycling valuable metals from by-products originated in the iron and steel *** studied microwave application to handling of the pickling sludge,which occurs in stainless steel rolling *** use for dehydration and carbo-thermic reduction processes was ***,because Pb elution from the wasted funnel glass used for the cathod-ray tube is one of the serious environmental problems,microwave application to leaching process of Pb from a Pb-conatining glass was *** kinetic study of the acid dissolution was *** topic is fabrication of filter material for burning particulate matter(PM)from diesel engine(Diesel Particulate Filter:DPF).Microwave rapid heating characteristics are applied to the cold start(ignition)condition of engine for prevention of PM emission.

关键词： microwave environment material processing heating wastes

Combustion Synthesized Porous Body of Fe3O4/Al System by Controlled Microwave Heating and Heating Behavior of the Products

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Combustion Synthesized Porous Body of Fe3O4/Al System by Con...

第七届冶金与材料电磁过程国际会议（EPM2012）

作者： LEE Chang Chuan yoshikawa noboru TANIGUCHI Shoji Graduate School of Environmental Studies Tohoku University School of Manufacturing Engineering Universiti Malaysia Perlis

Microwave-induced substitutional combustion reaction was utilized to fabricate porous ceramic composite from FeO/Al powder *** porous composite body was obtained by controlling the combustion reaction progress in a 2.45 GHz single mode *** to the fabrication of the porous body,heating behavior of the powder mixtures were studied in the separated electric(E) and magnetic(H) *** addition,heating ability of the microwave fabricated porous product was also *** powder can be heated up easily in both maximum H and E field,but a better heating was observed in the maximum H *** of the mixtures ratio(mixing compositions),maximum H field shows better heating *** E-field heating,temperature of the FeO samples decreased sharply when Al powder was ***,the same phenomenon was not observed in the maximum H field ***,fabrication of the porous composite body was carrying out in maximum H *** an adequate control of the reaction progress,products with a porous structure consisting of well-distributed metal particles in the alumina and/or hercynite matrix were ***,heating of the fabricated porous composite body was also been successfully carried out in the maximum H *** phases and microstructure were the main factors influencing the heating ability of the porous composite body.

关键词： Fe3O4/Al system separated H and E field heating heating ability

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微波场中加热高钛高炉渣的数值模拟

钢铁研究学报 2016年第2期28卷 14-18页

作者：陈艳白晨光吉川昇谷口尚司安徽工业大学材料科学与工程学院安徽马鞍山243002 重庆大学材料科学与工程学院重庆400044 日本东北大学材料开发系

利用微波加热技术在高钛高炉渣内引发裂纹的实验过程中发现炉渣局部区域发生热失控现象。为探寻高钛高炉渣在微波场中产生热失控的原因,使用FEMAP和wave-jω软件计算了在多模式微波炉中高钛高炉渣及其周围空间内微波场和热三维分布情况... 详细信息

利用微波加热技术在高钛高炉渣内引发裂纹的实验过程中发现炉渣局部区域发生热失控现象。为探寻高钛高炉渣在微波场中产生热失控的原因,使用FEMAP和wave-jω软件计算了在多模式微波炉中高钛高炉渣及其周围空间内微波场和热三维分布情况,并对比研究了钙钛矿相和普通高炉渣吸收微波的能力。通过计算结果可知几乎所有的微波能都集中在被加热的高钛高炉渣试样中,即微波具有加热高钛渣自身而非周围环境的特点。另外,高钛高炉渣试样中微波场分布不均匀,且分散在炉渣中的钙钛矿相比其他矿物相更易被微波加热。以上2因素作用下微波加热高钛高炉渣时局部区域发生热失控现象。

关键词：高钛高炉渣微波加热数值模拟热失控

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微波协助碾磨高钛高炉渣

钢铁研究学报 2006年第8期18卷 5-8页

作者：陈艳白晨光何宜柱吉川昇谷口尚司安徽工业大学材料科学与工程学院安徽马鞍山243002 重庆大学材料科学与工程学院重庆400044 日本東北大学材料開発系

为从高钛高炉渣中分离出钙钛矿(CaTiO3),降低渣中TiO2含量,进行了利用微波辐射在渣中引发裂纹,降低炉渣强度,节约碾磨能耗的研究。由实验得知,高钛高炉渣能被微波有效加热,并在炉渣中引发微裂纹;随着微波处理时间的延长,引发的裂纹也随... 详细信息

为从高钛高炉渣中分离出钙钛矿(CaTiO3),降低渣中TiO2含量,进行了利用微波辐射在渣中引发裂纹,降低炉渣强度,节约碾磨能耗的研究。由实验得知,高钛高炉渣能被微波有效加热,并在炉渣中引发微裂纹;随着微波处理时间的延长,引发的裂纹也随之扩展。为研究引发的裂纹对碾磨渣的影响,对经过微波处理的高钛高炉渣进行了耐压强度测试。测试结果表明,高钛高炉渣中引发微裂纹后,渣的耐压强度下降(经5次、5min微波处理后,渣的强度大约降低了20%);渣的耐压强度随微波处理时间的延长和微波循环次数的增加而降低,尤其是微波循环次数对渣耐压强度的影响更为显著。

关键词：微波高炉渣裂纹耐压强度

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微波场中加热水的模拟计算

安徽工业大学学报（自然科学版） 2006年第4期23卷 394-398页

作者：陈艳左兰兰吉川昇谷口尚司安徽工业大学材料科学与工程学院安徽马鞍山243002 日本东北大学材料开发系

微波环境下测温存在一些问题,借助数值模拟的方法可计算微波场中试样温度随加热时间的变化。计算过程中需考虑材料的介电常数随温度的变化。水的介电常数数据最完整,所以选水为研究对象,进行微波场中加热水的实验研究及数值计算。计算... 详细信息

微波环境下测温存在一些问题,借助数值模拟的方法可计算微波场中试样温度随加热时间的变化。计算过程中需考虑材料的介电常数随温度的变化。水的介电常数数据最完整,所以选水为研究对象,进行微波场中加热水的实验研究及数值计算。计算结果表明微波在炉腔内金属壁上全反射形成驻波。随着微波在水中的传播,其强度逐渐衰减,因此水表面的微波场最强。考虑水的介电常数随温度变化以及微波场在水中传播时的衰减等因素后,模拟计算出的水温随微波加热时间的变化与实验结果吻合较好。

关键词：模拟计算介电常数微波衰减微波场分布温度

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高钛高炉渣在微波场中的加热行为

钢铁钒钛 2006年第1期27卷 12-16,20页

作者：陈艳白晨光何宜柱吉川日升谷口尚司安徽工业大学材料科学与工程学院安徽马鞍山243002 重庆大学材料科学与工程学院重庆400044 日本东北大学材料开发系

为在高钛高炉渣中引发微裂纹、有效降低其研磨难度,进行了微波加热高钛高炉渣的实验。在引发裂纹的过程中发现其不仅能被微波场有效加热,且有热失控现象发生。为探讨微波加热高钛高炉渣的机理以及产生热失控现象的原因,对不同种类的合... 详细信息

为在高钛高炉渣中引发微裂纹、有效降低其研磨难度,进行了微波加热高钛高炉渣的实验。在引发裂纹的过程中发现其不仅能被微波场有效加热,且有热失控现象发生。为探讨微波加热高钛高炉渣的机理以及产生热失控现象的原因,对不同种类的合成炉渣进行了微波加热实验。实验表明渣中CaTiO3对有效加热高钛高炉渣起到重要作用。利用Network Analyzer测量了其介电常数。测量结果表明CaTiO3的介电常数远远大于一般材料,定量说明了在微波场中CaTiO3对加热高钛高炉渣的作用。此外,实验测得CaTiO3的介电常数随温度的升高而增大,这种正反馈加热方式正是高钛高炉渣在微波场中发生热失控的主要原因之一。

关键词：高钛高炉渣微波热失控钙钛矿(CaTiO3) 介电常数