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IJPAP Vol.46(06) [June 2008] >

Title: Kinetic analysis of crystallization processes in amorphous 2826A (Ni₃₆Fe₃₂Cr₁₄P₁₂ B₆) metallic glass
Authors: Rao, T Lilly Shanker
Dhurandhar, Heena D
Lad, Kirit N
Pratap, Arun
Keywords: Activation energy of crystallization
Frequency factor
Avrami exponent
Issue Date: Jun-2008
Publisher: CSIR
Abstract: The crystallization processes of 2826A (Ni₃₆Fe₃₂Cr₁₄P₁₂B₆) metallic glass were investigated using differential scanning calorimetry (DSC) at various heating rates. The thermograms at all scanning rates show two exothermic events. Different methods of kinetic analysis were employed at non-isothermal condition to derive important kinetic parameters namely activation energy of crystallization (E), frequency factor (A) and Avrami exponent (n) for the two exothermic peaks. The obtained values of E for peaks 1 and 2 are 298 and 457 (kJ/mol), respectively. The obtained Avrami exponent values 2.2(peak1) and 1.6(peak2) indicate one-dimensional and surface crystallization, respectively.
Page(s): 390-393
ISSN: 0019-5596
Source:IJPAP Vol.46(06) [June 2008]

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