Mössbauer Study of the Influence of Fe-Si-N Liquid in the Synthesis of β-Si3N4 from Silica |
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| Authors: | Amiya S Sanyal Joydeb Mukerji Siddhartha Bandyopadhyay |
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| Affiliation: | Central Glass and Ceramic Research Institute, Jadavpur, Calcutta-700 032, India |
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| Abstract: | Mössbauer spectra of the products obtained by carbothermal reduction and distribution of silica in the presence of iron in the temperatures range 1200o to 1540o were studied. The preponderance of β- Si3N4 over the α form at a higher reaction temperature were assumed to be related to the formation of an Fe-Si-N liquid. The liquid did not alter its composition with the variation of reduction-temprature, Iron had no effect on the reaction mechanism below 1300oC. |
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| Keywords: | silicon nitride alloys iron silicon oxynitride silicon carbide |
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