Abnormal thermal shock behavior of Ti3SiC2 and Ti3AlC2

Microstructure and properties of bulk Ta2AlC ceramic synthesized by an in situ reaction/hot pressing method

“…Up to 1200 • C, the residual flexural strength of Ta 2 AlC increases to 308 MPa. Zhang et al 6 proved that surface oxide layers essentially acted as thermal barriers that reduced the surface heat transfer coefficient so that the transient tensile stresses in the substrate was decreased. In Fig.…”

“…1,2 They are electrically and thermally conductive, machinable, damage tolerant, and resistant to thermal shock, and promising for high-temperature applications. [3][4][5][6][7] When n is 1, A is Al, and X is C, M 2 AlC phases are represented. Recently, the synthesis and characteristics of Ti 2 AlC, [8][9][10] Cr 2 AlC, 11,12 V 2 AlC, 13 Nb 2 AlC, 14,15 Ta 2 AlC, [16][17][18][19][20] etc.…”

Irradiation-induced structural transitions in Ti 2 AlC

“…M n + 1 AX n phases (where n = 1, 2, or 3, M is an early transition metal, A is an A-group element and X is nitrogen or carbon) are a class of hexagonal-structure layered ternary compounds, which in many ways exhibit a remarkable combined properties of metals and ceramics, such as good thermal shock resistance, high thermal and electrical conductivities, excellent resistance to oxidation and corrosion [1][2][3][4][5][6]. These good properties combined with high temperature stability make MAX phases as promising candidate materials for future fission and fusion reactors (e.g.…”

First-principles study of oxygen incorporation and migration mechanisms in Ti2AlC

“…In fact, the principal motivation of early research on MAX phases was their relatively good oxidation resistance over a wide range of environmental conditions. [1][2][3][4][5][6][7] The oxidation of Ti 2 AlC obeys a cubic law, and the oxide film formed on Ti 2 AlC matrix surface is mainly constituted of Al 2 O 3 embedded with dispersed TiO 2 subgrain, which provides a good protective barrier against further oxidation. 1,5 The oxide scale has a crucial influence on the high-temperature performances of MAX phases.…”