발간논문

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Vol.38, No.12, 1640 ~ 1647, 2000
Title
Reaction Mechanism in Fabrication of BN/Al(-Mg) Metal Matrix Composite ( MMC ) by Pressureless Infiltration Technique
진창훈C . H . Jin,정우광W . G . Jung,권훈H . Kwon
Abstract
BN/Al(-Mg) metal matrix composite(MMC) was fabricated using pressureless infiltration technique, in order to clarify the reaction mechanism. The phase characterizations of the composite were analysed using the scanning electron microscopy, energy dispersive X-ray spectroscopy, Auger electron spectroscopy and electron probe micro analysis on reaction products after the electrochemical dissolution of the matrix. It is confirmed that aluminum nitride (AlN) was formed by the reaction of Mg₃N₂ and Al alloy melt. Plate type AlN and polyhedral type Mg(-Al) boride were formed by the reaction between Mg₃N₂, BN and molten Al in the BN reinforced metal matrix composite. The reaction mechanism in the fabrication of BN/Al(-Mg) metal matrix composite was derived from the phase analysis results and thermodynamic investigation.
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