Synthesis of high-purity Ti3SiC2 and Ti3AlC2 by spark plasma sintering (SPS) technique

Temperature dependent phase stability of nanolaminated ternaries from first-principles calculations

“…As stated above, both Ti 2 AlC and Ti 3 AlC 2 are already known to exist, but since their respective decomposition temperatures are ~1900 K and ~1600-1700 K [35][36][37], our results should not be seen as to indicate phase stability above these temperatures; rather, they show a limitation inherent in the method used. More specifically, the method does not accommodate explicit anharmonic effects or liquids, the latter which is a disordered state and as such possessing additional configurational entropy as compared to crystal solids.…”

Synthesis of high-purity polycrystalline Ti3AlC2 through pulse discharge sintering Ti/Al/TiC powders

“…This is believed to be the first to synthesize polycrystalline bulk Ti 3 AlC 2 . In recent years, hot-pressing (HP) [4][5][6][7][8], self-propagating high temperature synthesis (SHS) [9][10][11] and pulse discharge sintering (PDS) [6,12] were employed to synthesize Ti 3 AlC 2 . In these synthesis methods, three reactions were used to synthesize bulk Ti 3 AlC 2 samples: (1) Ti + Al 4 C 3 + C → Ti 3 AlC 2 , (2) 3Ti + A1 + 2C → Ti 3 A1C 2 , (3) Ti + Al + TiC → Ti 3 AlC 2 .…”

“…The second reaction was employed for the synthesis Ti 3 AlC 2 by many researchers recently, including HP [4][5], SHS [9][10][11] and SPS [9] methods. For the third reaction, the reports are limited and the synthesizing mechanism is unknown [8,12], in which the Si was used as additive in order to improve the phase purity of the products. Pulse discharge sintering (PDS) technique, which is also called spark plasma sintering (SPS) [13], is a recent innovation and its versatility allows quick densification to near theoretical density in a number of metallic, ceramic and other engineering components [14,15].…”

Mechanical Behavior of Ti<SUB>3</SUB>AlC<SUB>2</SUB> Prepared by Pulse Discharge Sintering Method

“…4) This is believed to be the first to synthesize polycrystalline bulk Ti 3 AlC 2 with acceptable quality. In recent years, hotpressing (HP), [5][6][7][8] self-propagating high temperature synthesis (SHS) [9][10][11] and pulse discharge sintering (PDS) 6,12,13) processes were employed to synthesize Ti 3 AlC 2 . In these synthesis methods, four reactions were used to synthesize bulk 16) is a recent innovation and its versatility allows quick densification to near theoretical density in a number of metallic, ceramic and other engineering components.…”