Microwave Processing and Heating Behavior of Porous Composite Materials
The reaction between Al and Fe3O4 by microwave synthesis of stoichiometry powder mixture under N2 atmosphere is studied.As compared to traditional methods,microwave heating has advantages such as time and energy saving,rapid and internal heating.Prior to the fabrication of the porous body,heating of Fe3O4 and Al powder mixtures is studied in the separated electric(E)and magnetic(H)field.In addition,heating ability of the microwave fabricated porous products was also investigated.At the maximum H field,the powder mixture can be heated up easily as compared with those heated at maximum E field.In E-field,heating temperature of the Fe3O4 samples decreased sharply when Al powder was added.However,this effect was not observed in H field heating.Thus,fabrication of the porous composite body was carrying out in maximum H filed.Thermal behavior,phase and microstructure change was analyzed by DTA,XRD,SEM.Sample heated at 1265 oC shows the formation of micron sized metal particles,irregular in size and shape,uniformly dispersed and distributed in the ceramic compound.Porous structure,pore size in range of 10-250 μm was obtained.Heating ability evaluation was also been successfully carried out in the maximum H field.Product phases and microstructure were the main factors influencing the heating ability of the porous composite body.
Al/Fe3O4 microwave heating porous composite
C.C.Lee N.Yoshikawa S.Taniguchi
School of Manufacturing Engineering,Universiti Malaysia Perlis,Malaysia;Graduate School of Environme Graduate School of Environmental Studies,Tohoku University,Japan
国际会议
日本
英文
1-4
2013-04-01（万方平台首次上网日期，不代表论文的发表时间）