High Temperature Stability of Fepure-Si3N4 in Reducing Atmosphere

Bin Li; Jun Hong Chen; Jin Dong Su

doi:10.4028/www.scientific.net/AMR.952.11

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 952High Temperature Stability of Fepure-Si3N4 in...

High Temperature Stability of Fe_pur_e-Si₃N₄in Reducing Atmosphere

Abstract:

Iron and silicon nitride powders were mixed in a certain proportion and compacted, then Fe_pure-Si₃N₄ were prepared by heating the samples in reducing atmosphere at 1100°C, 1300°C and 1500 °C, respectively. The stability of Fe_pure-Si₃N₄ prepared at different temperatures was analyzed by XRD diffraction and theoretical thermodynamics calculation. Results show that the main components of Fe_pure-Si₃N₄ at high temperatures in reducing atmosphere are Si₃N₄and Si₂N₂O; Iron exists in Fe_pure-Si₃N₄ at 1100°C, and iron had largely converted to Fe₃Si phase at 1300°C and 1500°C, which is in accordance with the result of thermodynamic theoretical calculation.

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Periodical:

Advanced Materials Research (Volume 952)

Pages:

11-15

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.952.11

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Online since:

May 2014

Authors:

Bin Li, Jun Hong Chen*, Jin Dong Su

Keywords:

Fe₃Si, Fe_pure-Si₃N₄, Iron, Si₂N₂O

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