발간논문

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Vol.34, No.9, 1239 ~ 1249, 1996
Title
Research Paper - Composite Materials - : Properties of the Functionally Gradient Reaction Layers Produced by the Directed Metal Oxidation Process
김재윤Jae Yoon Kim, 김석윤Suk Yoon Kim, 김용석Yong Seog Kim
Abstract
The directed metal oxidation process has been used for the fabrication of Al-Mg/Al₂O₃ functionally gradient reaction layers. It was found that the reaction of the Al-Mg-Al₂O₃ powder compact at 900℃ under air atmosphere led to the formation of reaction layers with varying ceramic phase contents. Two different types of reaction layers were observed depending on the Mg contents : ceramic/channel/composite or channel/ceramic/channel/composite arrangements from the sample surface. The microstructural development of the reaction layers at various reaction stages was investigated and the mechanism of the characteristic microstructure formation was discussed on the basis of MgO phase formation on the surface of the reaction layer.
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