Zerr, Andreas ; Chigarev, Nikolay ; Brenner, Renald ; Dzivenko, Dmytro A. ; Gusev, Vitalyi (2010)
Elastic moduli of hard c-Zr3N4 from laser ultrasonic measurements.
In: physica status solidi (RRL) - Rapid Research Letters, 4 (12)
doi: 10.1002/pssr.201004345
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The bulk and shear moduli of dense polycrystalline oxygen-bearing c-Zr3N4 were determined to be B0 = 217(20) GPa and G0 = 163(9) GPa, respectively, using laser ultrasonic technique combined with a numerical analysis of the sample porosity. While the obtained B0 is in excellent agreement with the earlier high-pressure compression measurements, the G0 value is 70% higher than the previous estimate. Since both G0 and hardness of the dense c-Zr3N4 exceed those of γ-Si3N4, c-Zr3N4 vies for the rank of the third hardest material after diamond and cubic BN. Our results also support the suggestion that shear modulus is a robust predictor of hardness. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Zerr, Andreas ; Chigarev, Nikolay ; Brenner, Renald ; Dzivenko, Dmytro A. ; Gusev, Vitalyi |
| Art des Eintrags: | Bibliographie |
| Titel: | Elastic moduli of hard c-Zr3N4 from laser ultrasonic measurements |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2010 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | physica status solidi (RRL) - Rapid Research Letters |
| Jahrgang/Volume einer Zeitschrift: | 4 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1002/pssr.201004345 |
| Kurzbeschreibung (Abstract): | The bulk and shear moduli of dense polycrystalline oxygen-bearing c-Zr3N4 were determined to be B0 = 217(20) GPa and G0 = 163(9) GPa, respectively, using laser ultrasonic technique combined with a numerical analysis of the sample porosity. While the obtained B0 is in excellent agreement with the earlier high-pressure compression measurements, the G0 value is 70% higher than the previous estimate. Since both G0 and hardness of the dense c-Zr3N4 exceed those of γ-Si3N4, c-Zr3N4 vies for the rank of the third hardest material after diamond and cubic BN. Our results also support the suggestion that shear modulus is a robust predictor of hardness. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Freie Schlagworte: | bulk modulus, shear modulus, sound velocities, porosity |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 05 Apr 2012 08:47 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
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