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Amorphization and evolution of magnetic properties during mechanical alloying of Co62Nb6Zr2B30: Dependence on starting boron microstructure

AuthorsMoreno, L.M.; Blázquez, J. S.; Ipus, J.J.; Conde Amiano, Alejandro
Issue Date2014
CitationJournal of Alloys and Compounds 585: 485- 490 (2014)
AbstractCo62Nb6Zr2B30 composition was mechanically alloyed using three different types of boron powders in the starting mixture: crystalline β-B, commercial amorphous B and optimized amorphous B via ball milling. Using optimized amorphous B, amorphization process of the alloy is more efficient but milling to optimize amorphous B introduces some iron contamination. Boron inclusions (100-150 nm in size) remain even after long milling times. However, using amorphous boron reduces the fraction of boron distributed as inclusions to ∼40% of the total B. Thermal stability at the end of the milling process is affected by the initial boron microstructure. Coercivity is reduced a half using amorphous B instead of crystalline B in the starting mixture. © 2013 Elsevier B.V. All rights reserved.
Identifiersdoi: 10.1016/j.jallcom.2013.09.191
issn: 0925-8388
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