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Spinel-Si3N4: multi-anvil press synthesis and structural refinement

Schwarz, Marcus and Miehe, Gerhard and Zerr, Andreas and Kroke, Edwin and Poe, B. and Fuess, Hartmut and Rubie, D. C. and Riedel, Ralf (2000):
Spinel-Si3N4: multi-anvil press synthesis and structural refinement.
In: Advanced materials, Wiley, pp. 883-887, 12, (12), [Article]

Abstract

The third known polymorph of silicon nitride, which is cubic and was only recently discovered, has been prepared from two further, different precursors—Si2N2(NH) and a-Si3N4—in a high-pressure, high-temperature synthesis using multi-anvil presses. The synthesis and characterization of the products is described, which included a structural determination by Rietveld refinement of powder X-ray diffraction data. Spinel-type c-Si3N4 is significantly harder than the α and β phases and may possibly find applications as an ultrahard material.

Item Type: Article
Erschienen: 2000
Creators: Schwarz, Marcus and Miehe, Gerhard and Zerr, Andreas and Kroke, Edwin and Poe, B. and Fuess, Hartmut and Rubie, D. C. and Riedel, Ralf
Title: Spinel-Si3N4: multi-anvil press synthesis and structural refinement
Language: English
Abstract:

The third known polymorph of silicon nitride, which is cubic and was only recently discovered, has been prepared from two further, different precursors—Si2N2(NH) and a-Si3N4—in a high-pressure, high-temperature synthesis using multi-anvil presses. The synthesis and characterization of the products is described, which included a structural determination by Rietveld refinement of powder X-ray diffraction data. Spinel-type c-Si3N4 is significantly harder than the α and β phases and may possibly find applications as an ultrahard material.

Journal or Publication Title: Advanced materials
Volume: 12
Number: 12
Publisher: Wiley
Uncontrolled Keywords: High-pressure synthesis, c-Si3N4, Silicon nitride, c-Si3N4, Ultrahard materials, c-Si3N4
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Material Science > Structure Research
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 20 Nov 2008 08:19
Funders: We acknowledge the financial support by the Deutsche Forschungsgemeinschaft, Bonn (projects: Kr 1739/2-2 and Ri 510/14-1), as well as the ™Fonds der Chemischen Industrieº, Frankfurt.
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