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首页> 外文期刊>Journal of Microelectromechanical Systems: A Joint IEEE and ASME Publication on Microstructures, Microactuators, Microsensors, and Microsystems >Sintering Thermodynamics of Fields Activated Microforming and Sintering Technology for Fabricated MnZn Ferrite Microparts
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Sintering Thermodynamics of Fields Activated Microforming and Sintering Technology for Fabricated MnZn Ferrite Microparts

机译：Sintering Thermodynamics of Fields Activated Microforming and Sintering Technology for Fabricated MnZn Ferrite Microparts

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摘要

MnZn ferrites are widely used as core materials in electronic applications. However, few studies on fabricated MnZn ferrites microcomponents are available in this paper. To address this issue, a novel fields-activated microforming and sintering technology (micro-FAST) was introduced for the fabrication of MnZn ferrites microparts. The experimental results show that micro-FAST is an efficient process, which has lower energy consumption and little impact on the environment as a result of directly forming the component from loose powders. More interestingly, MnZn ferrite powders with a composition of Zn0.8Mn0.2Fe2O4(wt.) can be sintered at low temperature without much compromise of the final quality of microparts formed by micro-FAST. To analyze the sintering mechanism, in this paper, the sintering thermodynamics of micro-FAST for the fabrication of Phi 1.0 mmx 1.0 mm sized cylindrical bulk ferrite has been studied. The results show that the sintering energy of micro-FAST for MnZn ferrite powder comes from three sources: 1) heat exchange with die and punches; 2) alternating electric field; and 3) alternating magnetic field. These results being in correspondence with the analytical results of computer simulation.

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