Effects of TiC and TiN addition on combustion synthesis of Ti2AlC0.5N0.5 solid solutions

Combustion synthesis of Ti2(Al,Sn)C solid solutions from Ti/Al/Sn/C samples with addition of TiC and Al4C3

“…Ti 2 AlC is a representative carbide of the 211 (n¼ 1) MAX phase [4,5] and its associated solid solutions such as (Ti,Nb) 2 AlC [6,7], (Ti,V) 2 AlC [8 -1 0], (Ti,Ta) 2 AlC [3], (Ti,Cr) 2 AlC [11], and Ti 2 Al (C,N) [12,13] have been extensively studied. Fabrication techniques for the MAX solid solutions include reactive hot pressing [6], hot isostatic pressing (HIP) [4,8], in situ hot pressing/solid-liquid reaction synthesis [5,9], combustion synthesis [10,13], and spark plasma sintering (SPS) [14].…”

“…Fabrication techniques for the MAX solid solutions include reactive hot pressing [6], hot isostatic pressing (HIP) [4,8], in situ hot pressing/solid-liquid reaction synthesis [5,9], combustion synthesis [10,13], and spark plasma sintering (SPS) [14]. According to Zhu and Pan [15], another M-site phase, (Ti,Mo) 2 AlC, with Al 2 O 3 as a reinforcement was synthesized from the powder mixture of Ti, Al, TiC, and MoO 3 by reactive hot pressing at 1350 1C for 2 h. In contrast to the wide-ranging studies on M-and X-position solid solutions of Ti 2 AlC, the investigation on its A-site substitution is relatively scarce.…”

Formation of Ti2AlC0.5N0.5 solid solutions by combustion synthesis of Al4C3-containing samples in nitrogen

“…The SHS technique has been effectively utilized to produce a number of the MAX carbides, like Ti 3 SiC 2 [20], Ti 3 AlC 2 [21], Ti 2 AlC [22], Ta 2 AlC [23], Nb 2 AlC [24], and Ti 2 SnC [25]. Recently, Yeh et al [40] first prepared Ti 2 AlC 0.5 N 0.5 from TiC-and TiN-diluted Ti-Al-C powder compacts by combustion synthesis in either solid-gas or solid state mode. Formation of Ti 2 AlC 0.5 N 0.5 with three minor phases TiC, TiN, and Ti 3 Al was achieved by solid-gas combustion of the TiCdiluted samples in nitrogen [40].…”

“…Recently, Yeh et al [40] first prepared Ti 2 AlC 0.5 N 0.5 from TiC-and TiN-diluted Ti-Al-C powder compacts by combustion synthesis in either solid-gas or solid state mode. Formation of Ti 2 AlC 0.5 N 0.5 with three minor phases TiC, TiN, and Ti 3 Al was achieved by solid-gas combustion of the TiCdiluted samples in nitrogen [40]. For the TiN-added samples, the SHS process executed in the solid state was beneficial to reduce the secondary phases, which yielded Ti 2 AlC 0.5 N 0.5 with trivial amounts of TiC and TiN [40].…”

“…Formation of Ti 2 AlC 0.5 N 0.5 with three minor phases TiC, TiN, and Ti 3 Al was achieved by solid-gas combustion of the TiCdiluted samples in nitrogen [40]. For the TiN-added samples, the SHS process executed in the solid state was beneficial to reduce the secondary phases, which yielded Ti 2 AlC 0.5 N 0.5 with trivial amounts of TiC and TiN [40].…”