Thermal shock behavior of Ti3AlC2 from between 200°C and 1300°C

Fabrication of Ti3AlC2 ceramic material by mechanical alloying

“…It is a hexagonal system and a polycrystalline structure. Investigation on the electronic structure and bonding properties of Ti 3 AlC 2 has indicated a combination of metallic, covalent, and ionic bond types in this compound [2]. These structural properties make Ti 3 AlC 2 combine the properties of ceramics and metals, which is in good agreement with the experimental results investigated by Tezonov et al [3] and Wang et al [4] on fully dense polycrystalline Ti 3 AlC 2 .…”

Strengthening and tribological surface self-adaptability of Ti3AlC2 by incorporation of Sn to form Ti3Al(Sn)C2 solid solutions

“…As a result, this compound has been the subject of many studies in recent years [1][2][3][4]. It has been observed that Ti 3 AlC 2 exhibits an unusual combination of properties [9][10][11][12], such as excellent resistance to oxidation and to thermal shock, unusual brittle-to-ductile character, damage tolerance, being readily machinable, and having good electrical and thermal conductivity. Ti 3 AlC 2 also demonstrates good tribological properties [13][14][15][16], particularly at high sliding speeds [13,14].…”

Normalized evaluation of thermal shock resistance for ceramic materials

“…Previous studies demonstrated that the tensile stresses yield on the surface of the specimens during cooling, because the surface temperature is lower than the average temperature [12]. The formation of cracks on the surface of the specimens caused by these tensile stresses weakening ceramic materials is shown in Fig.…”

“…For those that are applied under transient thermal environments, for instance, high-temperature furnaces, filtration for hot gases or molten metal, heat exchangers, gas turbine engines, solid oxide fuel cell and catalyst supports [7][8][9][10][11], the thermal shock resistance of materials is a crucial factor determining the durability. Therefore, understanding and assessing the thermal shock and fatigue behavior of ceramics are of great importance for the application with high reliability at elevated temperature [3,12]. In contrast to metals, which yield and deform plastically before failure, a major characteristic of ceramics is that they are brittle and fracture with little or no deformation [4].…”

“…Hasselman tried to unify the two theories, and then presented a unified theory of thermal shock fracture initiation and crack propagation [17]. However, this approach appeared to not agree well with certain observations of ceramics [10,12,20]. Although the theoretical knowledge plays a significant role in understanding of the underlying mechanisms for thermal shock behavior of ceramics, it fails to lead to a unified test standard for evaluating and comparing the thermal shock resistance of ceramics.…”