Abstract
Powder mixtures of 3Ti/SiC/C/ xAl with different Al contents ( x = 0–0.2) were reactively sintered by pulse discharge sintering (PDS) process, to reveal the effect of Al addition on the bulk Ti 3SiC 2 synthesis. It was found that small amount of Al addition enabled single-phase Ti 3SiC 2 synthesis and the optimal sintering temperature for the Ti 3SiC 2 synthesis is greatly decreased by the Al addition. Almost single-phase bulk Ti 3SiC 2 material can be synthesized from 3Ti/SiC/C/0.15Al and 3Ti/SiC/C/0.20Al powder mixtures at temperature as low as 1200 °C for 15 min by PDS. The optimal temperature range for the Ti 3SiC 2 formation is enlarged obviously by Al addition.
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