Titanate coupling agent surface modification effect on the magnetic properties of iron-based alloy powder coil prepared using screen printing

Hsing I. Hsiang, Kai Hsin Chuang, Wen Hsi Lee

研究成果: Article同行評審

摘要

A molded-type coil is prepared by filling and dry pressing granulated alloy magnetic powders directly onto enameled wire. As the molded-type coil is developed toward miniaturization, the granules consisting of magnetic powder and organic binder cannot uniformly fill the small space in the coil center column during molding. This leads to a porous microstructure or cracks. In this study, magnetic alloy powder coils were prepared using a screen-printing process using high-solid-content magnetic pastes. The magnetic powder was surface-modified with titanate coupling agent to improve the magnetic powder and epoxy resin compatibility, thereby improving magnetic powder mixing with epoxy resin and reducing the high solid content magnetic paste viscosity. The experimental results showed that the relative density and magnetic properties (such initial permeability, core loss, and coercivity) can be significantly enhanced using titanate coupling agent surface modification.

原文English
頁(從 - 到)1800-1807
頁數8
期刊Journal of Materials Science: Materials in Electronics
32
發行號2
DOIs
出版狀態Published - 2021 一月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 凝聚態物理學
  • 電氣與電子工程

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