Properties of high density magnetic composite (HDMC) fabricated from iron powder coated with new type phosphate insulator

A powder magnetic core was developed using a novel warm compaction method using die wall lubrication with lithium stearate. The powder magnetic core, which was named HDMC (high density magnetic composite), has high magnetic flux density and high strength. However, the HDMC, which was fabricated from...

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Bibliographic Details
Published inINTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005 pp. 533 - 534
Main Authors Tajima, S., Hattori, T., Kondoh, M., Kishimoto, H., Sugiyama, M., Kikko, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Compaction
Conductivity
Glass
Insulation
Iron
Magnetic cores
Magnetic flux
Magnetic flux density
Magnetic properties
Powders
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Summary:A powder magnetic core was developed using a novel warm compaction method using die wall lubrication with lithium stearate. The powder magnetic core, which was named HDMC (high density magnetic composite), has high magnetic flux density and high strength. However, the HDMC, which was fabricated from iron particles coated with a phosphate glass insulator, had large eddy current loss at high frequency because the resistivity was small. To address this deficiency, a phosphate glass insulator with Sr/sup 2+/or Y/sup 3+/ was developed which was found to have high resistivity in keeping high magnetic flux density and strength of the HDMC.
ISBN:9780780390096
0780390091
ISSN:2150-4598
2150-4601
DOI:10.1109/INTMAG.2005.1463695