The carbon nonstoichiometry and the lattice parameter of (Ti1−xWx)C1−y

Various monolithic (Ti,W)C powders were synthesized from mixtures of carbon and oxides by varying the W content. The carbon content in the (Ti,W)C solid solution decreased with increasing W content when the solid solution was sintered at 1510 °C for 1 h. The lattice parameters of the sintered (Ti,W)C ceramics tend to decrease with carbon content. In this study, the changes in the carbon content as a function of the tungsten content were compared with the results obtained using ThemoCalc® software. The relationship between the lattice parameter and composition was examined using an analytical approach and ab initio simulations.