Abstract
The synthesis of Ti3AlC2 and Ti4AlN3 by isothermal sintering in vacuum is studied. The influence of the original powders, charge composition, and conditions of milling and sintering temperature on the phase composition of the material is analyzed. It is established that single-phase compounds form if and when the aluminum content in the original charge is higher than its stoichiometric amount by a factor of 1.4–1.6 for Ti3AlC2 and by a factor of 1.1–1.2 for Ti4AlN3. Conditions for producing single-phase Ti3AlC2 and Ti4AlN3 with the required TiC or TiN content were determined. The mechanical properties of the obtained materials in the 20–1300°C range were investigated. Results were compared with the mechanical properties of the previously obtained Ti3SiC2.
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