발간논문

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Vol.37, No.11, 1355 ~ 1363, 1999
Title
Research Paper / Composite Materials : Interfacial Phenomena in the SiC/2014A1 Composite : (I) Modification of Interfacial Characteristics
이재철Jae Chul Lee,안재평Jae Pyoung Ahn,시충양Zhongliang Shi,이호인Ho In Lee
Abstract
Methodologies both to avoid the formation of Al₄C₃ and to tailor the interfacial structures in the SiC/2014Al composite were demonstrated. Modification of the interfacial structures in the SiC/2014Al composite were made by forming SiO₂ layers on the surfaces of SiC via the passive oxidation at elevated temperatures. In the 2014Al composite reinforced oxidized SiC, nano-sized MgAl₂O₄ and Si crystals were observed to form at the interfacial region as a result of the reaction between the SiO₂ layer and the matrix. On the other hand, in the case of the 2014Al composite reinforced unoxidized SiC, SiC were found to react with Al to form both Al₄C₃ and Si. Crystallographic structures of the observed interfacial products were characterized using EDS and CBED of TEM.
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