Formation of Ti3AlC2/Al2O3 and Ti2AlC/Al2O3 composites by combustion synthesis in Ti–Al–C–TiO2 systems

Synthesis, microstructure and mechanical properties of Cr2AlC/Al2O3 in situ composites by reactive hot pressing

“…23 In the light of Yeh's research, the large amount of reaction heat would contribute to prolonging the reaction time and facilitating the integrality of reactions in the system. 24 The XRD patterns of hot-pressed samples of Cr 2 AlC/11 vol.% Al 2 O 3 sintered at different temperatures ranging from 500 • C to 1400 • C are shown in Fig. 2.…”

Synthesis, microstructure and mechanical properties of (Ti1−x,Nbx)2AlC/Al2O3 solid solution composites

“…Note that the TiC content decreases significantly, implying that the purity of the products is improved. This is attributed to the lower reaction temperature and the longer reaction time resulting from the incorporation of the thermite reaction [18].…”

“…Based on its high hardness, high modulus, excellent chemical stability, and compatible thermal expansion coefficient, Al 2 O 3 has been chosen as an effective reinforcement for MAX carbides such as TiAlC [16][17][18][19] and Ti 3 SiC 2 [20,21]. Liu et al [19] studied the strengthening of Ti 2 AlC by incorporating Al 2 O 3 in physical mixtures in which the bending strength and fracture toughness of the composites reached 500 MPa and 8.8 MPa m 1/2 , respectively.…”

Effects of TiC addition on formation of Ti2SnC by self-propagating combustion of Ti–Sn–C–TiC powder compacts

“…1(a) and (b), during the progression of the combustion front the sample compacts were subjected to a considerable axial elongation and a slight radial contraction. Formation of elongated products has been reported in the preparation of many ternary carbides by combustion synthesis, including Ti 3 SiC 2 [17,18], Ti 3 AlC 2 [19,20] and Ti 2 AlC [21,22]. It is believed that the axial elongation of the burned sample is most likely caused by the growth of Ti 2 SnC grains into a terraced structure [28].…”

“…When compared with the above-mentioned methods, combustion synthesis in the mode of self-propagating high-temperature synthesis (SHS) takes advantage of the self-sustaining merit from highly exothermic reactions and hence has the benefits of low energy requirement, short reaction time, and simple facilities [14][15][16]. Moreover, the SHS technique has been effectively applied to produce a number of the MAX carbides, like Ti 3 SiC 2 [17,18], Ti 3 AlC 2 [19,20], Ti 2 AlC [21,22], Ta 2 AlC [23], and Nb 2 AlC [24]. As the first attempt, this study aims at the synthesis of Ti 2 SnC by solid state combustion in the mode of SHS with the green samples compressed from both the Ti-Sn-C and Ti-Sn-C-TiC powder mixtures.…”