Effect of lubricant milling aids on the recrystallization behavior and magnetic properties of ball-milled iron powders having (001) fiber texture for soft magnetic composite

[Display omitted] •A fiber texture was formed in Fe powders milled with milling aids having lubricity.•The texture induced by boron nitride was retained after recrystallization.•The recrystallized texture improved the magnetic properties of the SMC using the iron powder. In ball-milled iron particle...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2021-03, Vol.521, p.167548, Article 167548
Main Authors: Motozuka, Satoshi, Mako, Yuki, Sato, Hisashi, Hojo, Hirofumi, Okazaki, Yasuo
Format: Article
Language:English
Subjects:
Ball milling
Boron
Boron fibers
Boron nitride
Coercivity
Easy magnetization axis
Heat treatment
Iron
Lubricants
Lubricants & lubrication
Lubricity
Magnetic permeability
Magnetic properties
Orientation analysis
Particulate composites
Recrystallization
Silicones
Soft magnetic composite
Texture
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Summary:[Display omitted] •A fiber texture was formed in Fe powders milled with milling aids having lubricity.•The texture induced by boron nitride was retained after recrystallization.•The recrystallized texture improved the magnetic properties of the SMC using the iron powder. In ball-milled iron particles for soft magnetic composites (SMCs), milling aids with lubricity can induce a (001) fiber texture with superior magnetic properties. Effects of lubricants on the recrystallization behavior of ball-milled iron particles with fiber texture and their magnetic properties of SMCs using the iron particles were investigated. During ball milling, lubricant oil and boron nitride (a solid lubrication particle) were used as lubricants. Both as-milled iron particles have a (001) fiber texture. However, when these iron particles are recrystallized using heat treatment, the iron particles milled using the lubricant oil almost disappeared while the fiber texture in the particles milled using the boron nitride was strongly retained. Therefore, it is concluded that ball milling for iron particles using boron nitride lubricant can retain (001) fiber texture in heat-treated iron particles, and SMC using these iron particles have higher permeability and lower coercive force.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.167548