Zerr, Andreas ; Kempf, Markus ; Schwarz, Marcus ; Kroke, Edwin ; Göken, Mathias ; Riedel, Ralf (2002)
Elastic moduli and hardness of cubic silicon nitride.
In: Journal of the American Ceramic Society, 85 (1)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The bulk modulus B0= 290(5) GPa and its first pressure derivative B′0= 4.9(6) were obtained for c-Si3N4 from volume versus pressure dependence. Measurements were performed under quasi-hydrostatic conditions in a diamond anvil cell to 53 GPa using synchrotron radiation and energy dispersive X-ray powder diffraction. This combined with nanoindentation measurements determined the shear modulus G0 of c-Si3N4 to be 148(16) GPa. The Vickers microhardness HV(0.5) for dense, oxygen-free c-Si3N4 was estimated to be between 30 and 43 GPa. Both the elastic moduli and microhardness of c-Si3N4 exceed those of the hexagonal counterparts, α- and β-phases.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2002 |
| Autor(en): | Zerr, Andreas ; Kempf, Markus ; Schwarz, Marcus ; Kroke, Edwin ; Göken, Mathias ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Elastic moduli and hardness of cubic silicon nitride |
| Sprache: | Englisch |
| Publikationsjahr: | 2002 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 85 |
| (Heft-)Nummer: | 1 |
| Kurzbeschreibung (Abstract): | The bulk modulus B0= 290(5) GPa and its first pressure derivative B′0= 4.9(6) were obtained for c-Si3N4 from volume versus pressure dependence. Measurements were performed under quasi-hydrostatic conditions in a diamond anvil cell to 53 GPa using synchrotron radiation and energy dispersive X-ray powder diffraction. This combined with nanoindentation measurements determined the shear modulus G0 of c-Si3N4 to be 148(16) GPa. The Vickers microhardness HV(0.5) for dense, oxygen-free c-Si3N4 was estimated to be between 30 and 43 GPa. Both the elastic moduli and microhardness of c-Si3N4 exceed those of the hexagonal counterparts, α- and β-phases. |
| Freie Schlagworte: | elastic constants,hardness, silicon nitride, nitrides |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 19 Nov 2008 16:29 |
| Letzte Änderung: | 16 Apr 2020 13:31 |
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