Nanocrystallization of cobalt based metallic glass

Srivastava, A. P. ; Srivastava, Dinesh ; Suresh, K. G. ; Dey, G. K. (2009) Nanocrystallization of cobalt based metallic glass Advanced Materials Research, 67 . pp. 25-32. ISSN 1022-6680

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Effect of copper addition in a Metallic glass 2714A on the nanocrystallization characteristics have been examined in this study. Amorphous ribbon of the alloy composition Co64.5 Fe3.5 Si16.5 B13.5 Ni1Cu1 were prepared by melt spinning technique. Nanocrystallization kinetics was studied using differential scanning calorimeter technique. The kinetic parameters such as activation energy and Avrami exponent were determined using two different non-isothermal analysis methods. The kinetic behavior of individual crystallization event has been rationalized on the basis of these results. The role of addition of copper on the crystallization behavior has been understood by comparing with Metallic glass 2714A. The isothermally annealed nanocrystallized microstructures were characterized by X-ray diffraction.

Item Type:Article
Source:Copyright of this article belongs to Trans Tech Publications Inc.
Keywords:Amorphous; Metallic Glass; Nanocrystallisation; Soft Magnetic Material
ID Code:82283
Deposited On:10 Feb 2012 04:52
Last Modified:10 Feb 2012 04:52

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