Table 2 Nanoindentation elastic modulus, hardness, and Poisson’s ratios for every monocarbide and mononitride used as a precursor for the HENs and HECNs. Modulus and hardness are measured from samples synthesized via SPS. Poisson’s ratios are gathered from the literature, and mechanical properties for carbides (except CrC) are from Ref.9.

From: Bulk high-entropy nitrides and carbonitrides

Composition

Nanoindentation modulus (GPa)

Nanoindentation hardness (GPa)

Poisson’s ratio

References

TiN

532 ± 25

21.1 ± 2.7

0.22

45,46

TiC

489

31

0.19

9,47

ZrN

441 ± 23

18.6 ± 1.6

0.26

46

ZrC

402

24

0.20

9,47

HfN

377 ± 6

17.8 ± 1.1

0.25

45,46

HfC

428

25

0.18

9,47

VN

393 ± 44

16.0 ± 3.4

0.29

48

VC

465

29

0.22

9,47

NbN

389 ± 27

25.5 ± 3.7

0.29

49

NbC

429

17

0.22

9,47

TaN

377 ± 6

30.6 ± 1.3

0.335

50

TaC

431

14

0.24

9,47

CrC

292 ± 32

17.8 ± 3.8

0.28

45,46

CrN

352 ± 31

17.8 ± 2.5

0.29

45,46

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