Combustion Formation of Ti2AIC MAX Phase by Electro-Plasma Processing

Document Type

Article

Publication Date

9-28-2012

Abstract

The formation of high-purity MAX Ti2AlC powders from titanium, aluminum and graphite powder compact was directly obtained by electro-plasma process (EPP) and the following combustion reaction. The theoretical density of the powder compact was found to play an important role for the initiation of the combustion reaction. For the compacts with a higher than 70% of theoretical density, the combustion reaction occurred and the Ti2AlC powders were obtained in-situ. Because of the occurrence of combustion reaction in the electrolyte liquid, the resultant particles experienced rapid quenching and resulted in the formation of high-purity Ti2AlC powders. The resultant particles which were not experienced the rapidly liquid quenching were found to have less Ti2AlC purity. X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the products after the processing of electro-plasma processing. The mechanism of formation of Ti2AlC powders was also discussed.

Publication Source (Journal or Book title)

Processing and Properties of Advanced Ceramics and Composites IV: Ceramic Transactions

First Page

55

Last Page

64

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