발간논문

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Vol.32, No.10, 1180 ~ 1187, 1994
Title
Fabrication of Wide Sn Polycrystalline Ribbons by Planar Flow Casting
이상목Sang Mok Lee, 명로훈Nho Hun Myoung, 홍준표Chun Pyo Hong
Abstract
Planar Flow Casting has been carried out so as to develop the continuous process which can produce the wide polycrystalline ribbons up to 50㎜ width with reliability. The material used in this investigation was tin for the sake of ease in processing. A series of experiments have been performed with 50㎜ width graphite nozzle, using argon gas to eject the molten tin onto a rotating steel substrate. The process conditions have been varied in order to determine the optimun casting parameters for the apparatus used. The basic relationships between the process parameters and ribbon geometry were exanined by measuring the thickness, surface roughness test, optical microscopy, SEM and XRD analysis. Polyscrystalline ribbons of several hundred ㎛ thick and 50㎜ wide have been cast continuously exceeding 30m in length for one batch procedure. The empirical relationship t.=8.785(Q^(0.17)/V^(0.84)) was proposed for the description of the dependence of ribbon thickness on melt flow rate and substrate velocity.
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