Thermal Properties and Crystallization Behavior of Co67Fe4Cr7Si8B14

Abstract

In order to investigate the crystallization behavior of the Co67Fe4Cr7Si8B14 amorphous<br><br>metallic alloy, ribbons of this alloy were prepared by planar flow melt spinning process (PFMS).<br><br>Differential scanning calorimetery (DSC) and differential thermal analyzer (DTA) were used to<br><br>analyze the thermal properties and crystallization behavior of the samples at three heating rates of<br><br>10, 20 and 30 º C/min. The experimental data were fitted to the Avrami model to determine the<br><br>crystallization behavior. The results showed that the crystallization exotherm became wider and<br><br>shifted toward a higher temperature range as the heating rate increased. The Avrami analysis also<br><br>showed that n is about 1, which is related to the same transformation mechanism at different heating<br><br>rates. The Kissinger method was used to determine the activation energy for the first crystallization<br><br>peaks. The measured value is approximately 332.67 kJ/g.