Some characteristics of the diffusion of carbon in molybdenum carbide

Structural stability of α/β-Mo2C during thermochemical processing

“…high hardness and melting point, good thermal stability, electrical conductivity and catalytic properties making them suitable for applications in the field of catalysis [1][2][3][4][5], cutting tools [6][7][8] and hard facing [9]. Mo 2 C is conventionally produced from a stoichiometric blend of molybdenum powder and carbon black, by annealing under argon flow or vacuum at a temperature between 1400 and 1500 • C [10]. Mordenti et al have reported Mo 2 C phase formation at lower temperature (1000 • C) by reaction between the transition metal oxide and high specific surface active carbon [11].…”

Mechanisms of time-modulated polarized nano-crystalline diamond growth

“…Fig. 6 presents the evolution of the logarithm of the diffusion coefficient Ln(D) as a function of the inverse temperature 1/T for TaC [38] , ZrN [39] and Mo 2 C [40] . From 1400 K to 3000 K, the diffusion coefficient values for ZrN are always lower than for TaC, itself lower than for Mo 2 C.…”

“…6. Diffusion coefficient evolution as a function of temperature for TaC [38], ZrN [39] and Mo 2 C [40]:…”

First-principles investigation of intrinsic defects and self-diffusion in ordered phases of V2C

“…[42] compounds limit diffusion experiments to temperatures above the order-disorder transition temperatures. Experimental work on non-NaCl-type carbide phases is scarce with only a few studies on WC [15], Mo 2 C [16] and Fe 3 C [17]. The selfdiffusion behavior of binary transition metal carbides has been summarized in [18,19].…”