Method for manufacturing coil component with magnetic base body formed using metal magnetic grains and resinate
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United States of America Patent
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Nov 28, 2023
Grant Date -
Mar 2, 2023
app pub date -
Oct 24, 2022
filing date -
Feb 18, 2020
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Abstract
A method for manufacturing a coil component includes: providing multiple metal magnetic grains; preparing a magnetic body paste by mixing the multiple metal magnetic grains, a binder resin containing a resinate having at least one element selected from the group consisting of Si, Al, Cr, Mg, Ti, and Zr, and a solvent; forming a compact using the magnetic body paste; heat-treating the compact to form, on surfaces of the metal magnetic grains, bonding parts constituted by an amorphous oxide containing carbon and the at least one element, thereby forming a magnetic base body wherein the multiple metal magnetic grains are bonded via the bonding parts; forming a coil that includes a metal conductor; and forming external electrodes on surfaces of the magnetic base body and connecting end parts of the coil to the external electrodes, respectively.
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