Diffusion and solid solution formation between the binary carbides of TaC, HfC and ZrC

Effect of nonstoichiometric TiN0.3 on diffusion behavior in TaC–TiN0.3 system

“…2, 3, and 4. The interdiffusion coefficient of Ta, Ti, and N was calculated using the Boltzmann-Matano method [9,[15][16][17][18][19][20] (Table 2).…”

“…Ghaffari et al [9] studied the phase evolution and diffusion behavior of TaC, ZrC, and HfC. Meanwhile, Wang et al [10] analyzed the effects of solid solution formation on the densification of ZrC ceramics added with VC, NbC, and TaC.…”

Conditions for fabricating single-phase (Ta, Zr)C carbide by SHS from mechanically activated reaction mixtures

“…At an MA duration of 10 min and 1-2% carbon excess, an increase in the ratio between the weight of the "chemical oven" and the green mixture to 1.5 : 1.0 increases the combustion temperature above 3000 K, thus enabling reduction of ZrO 2 via reaction (2). Hence, binary carbide (Ta,Zr)C is formed while the hot products are exposed to these conditions; thus, 1.5-2% carbon excess and a ratio between the weights of the "chemical oven" and the green mixture of 1.5 are optimal.…”

“…Tantalum and zirconium carbides have the highest melting points among the known compounds (3880°C and 3532°C, respectively) and are resistant to corrosive environments and thermal shock [1][2][3]; as a result, they can be used as construction materials [4][5][6][7][8] and protective coatings, including those for carbon-carbon composites [9][10][11]. However, the irregular oxidation resistance of tantalum and zirconium carbides is a problem.…”

Formation and Properties of the Ta‐Y2O3, Ta‐ZrO2, and Ta‐TaC Nanocomposites

“…Other most commonly used refractory materials are ceramics such as oxides (ZrO 2 and Y 2 O 3 ), carbides (TaC, ZrC, and WC), or nitrides (TiN and Si 3 N 4 ) [3][4][5]. Both types of refractory materials, that is, metals and ceramics have found applications in the design of bulk parts or coatings.…”