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Alloy substituents for cost reduction in soft magnetic materials

Published online by Cambridge University Press:  23 March 2015

Michael Kurniawan ,
Vladimir Keylin  and
Michael Edward McHenry
Michael Kurniawan*
Affiliation:
Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15217, USA
Vladimir Keylin
Affiliation:
Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15217, USA
Michael Edward McHenry
Affiliation:
Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15217, USA
*
a)Address all correspondence to this author. e-mail: mkurniaw@andrew.cmu.edu
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Abstract

Amorphous and nanocrystalline soft magnets have been investigated extensively in the past two decades. Many materials with attractive soft magnetic properties contain boron, which improves the glass formability, thermal stability and prevents undesirable grain growth. The high price of boron, however, makes the development of new soft magnetic materials and alternative synthesis routes important. We report here a synthesis of cobalt-rich alloys by substituting boron carbide for elemental boron to achieve significantly lower cost. Ribbons produced with and without boron carbide substitution were observed to exhibit comparable soft magnetic properties while the former results in 31–48% cost reduction. Extrapolating this idea to commercial VITROVAC 6025 and 6150, the cost reductions were calculated to be 56 and 50%, respectively, while both synthesis routes produced ribbons of similar soft magnetic properties. Our work here provides an attractive route to reduce the cost and increase the market competitiveness of soft magnets.

Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 8 , 28 April 2015 , pp. 1072 - 1077
Copyright
Copyright © Materials Research Society 2015 

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References

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