ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.2002.tb00044.x
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