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)
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2002 |
| Creators: | Zerr, Andreas ; Kempf, Markus ; Schwarz, Marcus ; Kroke, Edwin ; Göken, Mathias ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | Elastic moduli and hardness of cubic silicon nitride |
| Language: | English |
| Date: | 2002 |
| Publisher: | Wiley |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 85 |
| Issue Number: | 1 |
| 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. |
| Uncontrolled Keywords: | elastic constants,hardness, silicon nitride, nitrides |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
| Date Deposited: | 19 Nov 2008 16:29 |
| Last Modified: | 16 Apr 2020 13:31 |
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