Effects of B and P content on structural and magnetic properties of cast iron based amorphous alloys

• Published in: Hyperfine interactions 2009-06, Vol.191 (1-3), p.109-113
• Main Authors: Kane, S. N., Lee, H. J., Kim, S. B., Jeong, Y. H., Hyun, S. W., Kim, C. S., Varga, L. K.
• Format: Article
• Language: English
• Subjects: Atomic; Condensed Matter Physics; Hadrons; Heavy Ions; Molecular; Nuclear Physics; Optical and Plasma Physics; Physics; Physics and Astronomy; Surfaces and Interfaces; Thin Films
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-009-9960-5

Mössbauer spectroscopy, DSC and magnetic measurements have been used to study the influence of B and P on structural; magnetic properties and thermal stability of cast iron based alloys. Results reveal that addition of B and P affects appreciably: (1) the crystallization temperature and supercooled liquid region ranging between 690–781 and 53–81 K respectively; (2) the spin texture, disorder and (3) the obtained magnetization parameters. Coercive field values range between 10.09 and 16.37 A/m, with lowest value of 10.09 A/m obtained for Ci 87.82 B 12.17 . Saturation induction ( B s ) values vary between 1.32 and 1.85 T. Highest B s value of 1.85 T is obtained for the Ci 95.65 B 4.32 alloy which is at the edge of glass forming ability, with only 4.32 at.% of boron was added to the cast iron composition. Losses (at 50 Hz and 0.32 kA/m) for the studied samples range between 0.43 and 0.82 W/kg. Lowest losses of 0.43 W/kg was obtained for the Ci 91.3 P 4.35 B 4.35 alloy. Phosphorous and boron additions, helps in the bulk glass forming ability, suggesting perspective applications of these cheap cast iron based soft magnetic alloys as a substitute of the conventional materials.