발간논문

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Vol.27, No.2, 123 ~ 132, 1989
Title
Effect of Si Contents on Magnetic Properties of high Si - Fe Sheet
구자명Jar Myung Koo, 조성석Seong Seock Cho, 천병선Byong Sun Chun
Abstract
The magnetic properties and microstructures of 0.3㎜ thick high Si-Fe alloys sheets made by the twin roll process were studied after annealing the sheets at 1100℃ for 60 minutes in the vacuum atmosphere of 10^(-4) Torr. The microstructure of 6.5 wt%Si-Fe alloy showed the DO₃precipitates in the B₂matrix. When the specimens were heated at a constant rate of 2℃/min, the electrical resistivities of 3, 4, 5 and 6wt%Si alloys increased in the temperature range between 330℃ and 750℃ in comparison to those of the as quenched state. On the contrary, the resistivity of 6.5 wt%Si alloy decreased in the temperature range between 350℃ and 550℃. The coercive force was 0.51 Oe for the 6.5 wt%Si-Fe alloy and the AC core loss W_(15/50) and W_(10/50) were 0.69 w/㎏ and 0.30w/㎏ respectively.
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