발간논문

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Vol.27, No.9, 808 ~ 816, 1989
Title
Study on the Consolidation of amorphous Fe80.5Si6.5B12C1 and Co70.3Fe4.3Si16.4B9 Alloy powders by Powder rolling process
박현식Hyun Sik Park, 나형용Hyung Yong Ra, 신관수부P . H . Shingu
Abstract
Consolidation of amorphous Fe_(80.5)Si_(6.5)B_(12)C₁ and Co_(70.3)Fe_(4.3)Si_(16.4)B_9 alloy powders was performed by the powder rolling process. As the basic idea of this process, the decrease of viscosity of amorphous metal with increasing temperature was used. Thus the optimum heat treatment temperature(Top) for consolidation was investigated. The Top(Fe system : 738K, Co system 763 K) coincided with 95% of the crystallization temperature(Tx) measured by differential scanning calorimetry at a heating rate of 20 K/min. The consolidated amorphous alloy maintained the low coercivity of the initial powder. A ball-milling treatment of amorphous powder far consolidation improved the compressive strength of the bulk specimen by 10㎏/㎟.
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