Sintering thermodynamics of fields activated microforming and sintering technology for fabricated MnZn ferrite microparts

Kunlan Huang, Yi Yang, Yi Qin, Gang Yang, Deqiang Yin

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3 Citations (Scopus)


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 Φ 1.0 mm × 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.
Original languageEnglish
Pages (from-to)1389-1395
Number of pages7
JournalJournal of Microelectromechanical Systems
Issue number6
Early online date11 Apr 2014
Publication statusPublished - 31 Dec 2014


  • MnZn ferrite
  • Micro parts
  • Microfabrication
  • Thermodynamics
  • Sintering

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