Abstract
Al substituted MoSi2composites were prepared by using microwave assisted synthesis method, which is a self-propagation synthesis ignited by microwave energy. The composition and microstructure of as combusted powder had been detected by XRD and SEM analysis. Result shows that the pre-heating temperature and phase composition of microwave assisted combustion synthesis is largely influenced by the content of aluminum. The phase structure of Mo(Si, Al)2alter from a mixture of MoSi2and Mo5Si3to nearly pure Mo (Si, Al)2with the increasing of Al substitution. The main mechanism is dissolution separation..
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