Table 1 Physical parameters of the refractory metal elements (and their carbides) employed in the two attempted high entropy carbide compositions.

From: Processing and Properties of High-Entropy Ultra-High Temperature Carbides

Element

Atomic Radius (Å)a

Lattice parameter of stoichiometric carbide (Å)

Melting temperature of stoichiometric carbide (°C)

Calculated metal vacancy formation energies in the carbides (eV)k

Hf

1.564

4.637b

3959g

9.3

Ta

1.430

4.452c

3768g

3.5

Zr

1.590

4.692d

3427h

9.4

Nb

1.448

4.470e

3600i

4.1

Ti

1.429

4.326f

3027j

8.6

  1. aFluck et al.46, bLengauer et al.47, cBittner et al.48, dChase, Juenke49, eWong-Ng et al.50, fCapkova et al.51, gCedillos-Barazza et al.1, hFernández Guillermet A.52, iSmith et al.53, jFrisk, Karin54, kYu et al.23.
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