Thermal Behavior and Crystallization of Fe81 - xCoxZr7Nb2B10 (x = 2, 4, 6) Alloys |
| W.Q. Yu, Y.M. Sun, L.H. Liu, L.R. Dong and Z. Hua
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, Jilin, P.R. China |
| Received: March 21, 2011; Revised version: October 19, 2011; In final form: November 9, 2011 |
| Full Text PDF |
| Thermal behavior and microstructure of Fe81 - xCoxZr7Nb2B10 (x = 2, 4, 6) alloys were investigated by differential thermal analysis and X-ray diffraction. Both the supercooled liguid region Δ Tx and the first crystallization peak temperature Tp1 are the lowest and the span Δ Tp between Tp1 and Tp2 is the highest when 4 at.% Fe is substituted by Co. The crystallization activation energy Ep1 for Fe75Co6Zr7Nb2B10 alloy is the minimum for the heating rates ν = 5-20 K/min. Ep1 for Fe77Co4Zr7Nb2B10 alloy is the minimum for the heating rates ν = 20 - 50 K/min. The crystallization processes of Fe81 - xCoxZr7Nb2B10 (x = 2, 4, 6) amorphous alloys are similar on the whole, which is as follows: amorphous → amorphous + α-Fe(Co) → α-Fe(Co) + Fe3Zr + Fe2Nb0.4Zr0.6. |
| DOI: 10.12693/APhysPolA.120.1034 PACS numbers: 65.60.+a, 61.43.Dq |