발간논문

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Vol.31, No.12, 1548 ~ 1556, 1993
Title
A Study on the Fabrication of Metallic Powders by Centrifugal Emulsification Process
장성준S . Jang, 윤우영W . Yoon
Abstract
A new powder-making process named centrifugal emulsification process(CEP) has been developed and tested for the Pb-Sn eutectic alloy system. The underlying principle of CEP was to fabricate the powders in inorganic oil(or salt) using centrifugal force. Since the alloy powders did not contact directly with oxygen throughout the process, the powders could be produced without oxidizing contamination. The mean particle size and size distribution could be controlled by various processing parameters such as filter rotating speed, the size of meshes and oil temperature. The morphology of the particles could also be customized using spherodization vs. solidification time ratio. The amount of undercooling of the CEP powders was also detactable and might be used further to understand the solidification behaviors. The microstructures of the Pb-Sn eutectic CEP powders were very close to those of the RSP powders.
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