Abstract
During pressureless reactive sintering of Ti 3 SiC 2 we found that adding small amounts of Al (∼0.68 wt.%) to the powder mixture of Ti/Si/2TiC improves the density of the compact by 38%, and enhances the formation of the desired phase, Ti 3 SiC 2 . Further increase in the Al content—up to 2.7 wt.%—did not show enhanced effect. The mechanism is believed to be the deoxidation of the starting powders by the molten Al.
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