Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-24T15:46:40.409Z Has data issue: false hasContentIssue false
  • English
  • Français

Comments on “Hardness, elasticity, and fracture toughness of polycrystalline spinel germanium nitride and tin nitride,” by M.P. Shemkunas, W.T. Petuskey, A.V.G. Chizmeshya, K. Leinenweber, and G.H. Wolf [J. Mater. Res. 19, 1392 (2004)]: Reestablishing of elastic moduli for γ-Ge3N4

Published online by Cambridge University Press:  31 January 2011

Andreas Zerr
Andreas Zerr*
Affiliation:
Laboratoire des Propriétés Mécaniques et Thermodynamiques des Matériaux, Centre National de la Recherche Scientifique (LPMTM-CNRS), Université Paris Nord, 93430 Villetaneuse, France
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

It will be shown that in the considered paper, a mistake occurred by handling or editing of experimental data for one of two investigated materials, namely, for cubic germanium nitride having spinel structure (γ-Ge3N4). This mistake led to incorrect values of the shear modulus G0, Young’s modulus E0, and Poisson’s ratio ν0 of this compound. My effort to recover the elastic moduli of γ-Ge3N4 from the available data gave the following results: G0 = 124 GPa, E0 = 326 GPa, and ν0 = 0.32.

Keywords

Elastic propertiesNitride
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 12: Biomimetic and Bio-enabled Materials Science and Engineering , December 2008 , pp. 3273 - 3274
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Shemkunas, M.P., Petuskey, W.T., Chizmeshya, A.V.G., Leinenweber, K., Wolf, G.H.: Hardness, elasticity, and fracture toughness of polycrystalline spinel germanium nitride and tin nitride. J. Mater. Res. 19, 1392 2004CrossRefGoogle Scholar
2Zerr, A., Kempf, M., Schwarz, M., Kroke, E., Göken, M., Riedel, R.: Elastic moduli and hardness of cubic silicon nitride. J. Am. Ceram. Soc. 85, 86 2002CrossRefGoogle Scholar
3Zerr, A., Riedel, R., Sekine, T., Lowther, J.E., Ching, W.Y., Tanaka, I.: Recent advances in new hard high-pressure nitrides. Adv. Mater. 18, 2933 2006CrossRefGoogle Scholar
4Somayazulu, M.S., Leinenweber, K., Hubert, H., McMillan, P.F., Wolf, G.H.: High pressure-high temperature synthesis of spinel Ge3N4Science and Technology of High Pressure, Proceedings of AIRAPT-17 edited by M. Manghnani, W.J. Nellis, and M. Nicol Universities Press Hyderabad, India 2000 663Google Scholar
5Oliver, W.C., Pharr, G.M.: Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology. J. Mater. Res. 19, 3 2004CrossRefGoogle Scholar