This study assessed the feasibility of a Ti 3 AlC 2 MAX phase as an Al-source for the formation of a mullite bond in the fabrication of porous SiC tubes with high strength. The as-received Ti 3 AlC 2 was partially oxidized at 1200°C for 30 min before using to minimize the abrupt volume expansion caused by oxidation during sintering. Thermal treatment at 1100-1400°C for 3 h in air led to the formation of Al 2 O 3 by the decomposition of Ti 3 AlC 2 , which reacted further with oxidation-derived SiO 2 on the SiC surface to form a mullite phase. The fabricated porous SiC tubes with a relative density of 48-62 % exhibited mechanical strengths of 80-200 MPa, which were much higher than those with the Al 2 O 3 filler material. The high mechanical strength of the Ti 3 AlC 2 added porous SiC was explained by the rigid mullite neck formation along with the retained Ti 3 AlC 2 with good mechanical properties.
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