Table 3 Results for mechanical properties (bulk: B, shear: G, and elastic: E, moduli, and Vickers hardness: HV) for eight rock-salt structure binary carbides

From: High-entropy high-hardness metal carbides discovered by entropy descriptors

 

B

G

E

H V

System

AFLOW

Exp.

Exp.a

AFLOW

Exp.

Exp.a

AFLOW

Exp.

Exp.a

Chen

Teter

Tian

Exp.

Exp.a

HfC

239

241

223

186

179–193

181

443

316–461

428 ± 32

29

28

28

19–25

25 ± 2

MoC

335

—

—

152

—

—

396

—

—

12

23

13

27–83b

—

NbC

297

296–378

246

199

197–245

177

488

330–537

429 ± 46

25

30

25

19–25

17 ± 3

TaC

326

248–343

219

213

215–227

184

525

241–722

431 ± 44

25

32

25

16–23

14 ± 2

TiC

251

241

255

181

186

207

438

447–451

489 ± 13

26

27

25

32

31 ± 2

VC

283

389

250

199

157

196

484

268–420

465 ± 13

26

30

26

20–29

29 ± 1

WC

365

—

—

153

—

—

403

—

—

11

23

12

> 28c

—

ZrC

221

220

216

157

172

169

381

385–406

402 ± 13

23

28

22

23–25

24 ± 1

  1. The AFLOW values are calculated using the Voigt-Reuss-Hill average and the Automatic Elasticity Library (AEL) module53, whereas HV is estimated using three different models described in the literature. These results are compared with two sets of available measured data, obtained from the literature72,73 and the current experiments. Units: B, G, E, and HV in (GPa)
  2. aThis work
  3. bα-MoC1−x  + η-MoC + γ-MoC composite74
  4. cWC1−x; x = 0.36–0.4175
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