Influence of microstructure on hysteresis loss of pure iron powder core

Takuya Takashita, Naomichi Nakamura, Yukiko Ozaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this study is to separate the hysteresis loss of an iron powder core into contributions from possible loss mechanisms quantitatively. Insulation coated pure iron powders were compacted and annealed to prepare ring-shaped powder cores. Their crystal grain boundary densities were controlled with the powder and core preparation conditions. The hysteresis loss decreased with a decrease in the grain boundary density, however, a grain boundary pinning model showed that its contribution to the total hysteresis loss was 50% or more, even at the lowest grain boundary density within the range of the experimental condition in this study. The loss mechanisms will be discussed in detail in comparison with steel sheet cores with the chemical composition equivalent to the iron powders.

Original languageEnglish
Title of host publicationWorld PM 2016 Congress and Exhibition
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Electronic)9781899072484
Publication statusPublished - Jan 1 2016
Externally publishedYes
EventWorld Powder Metallurgy 2016 Congress and Exhibition, World PM 2016 - Hamburg, Germany
Duration: Oct 9 2016Oct 13 2016

Publication series

NameWorld PM 2016 Congress and Exhibition

Other

OtherWorld Powder Metallurgy 2016 Congress and Exhibition, World PM 2016
CountryGermany
CityHamburg
Period10/9/1610/13/16

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Metals and Alloys

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