Thermodynamic analysis of structural transformations induced by annealing of amorphous Si–C–N ceramics derived from polymer precursors
作者： Jerzy Andrzej Golczewski
DOI: 10.3139/146.101295
关键词:
摘要: AbstractThermodynamic modeling has been used to explain structural transformations induced by heat treatment of amorphous Si–C–N ceramics derived from polymers. Nanocrystalline silicon carbide and nanocrystalline nitride identified in the ceramic microstructure have regarded as metastable NASIC NASIN phases system. The Gibbs energies G(NASIC) G(NASIN) together with previously modeled energy am-SICN compute phase diagrams. Computational results allow explanation crystallization process ceramics. According this model, temperature invariant reaction between carbon changes growth nanocrystallites, which explains dependence thermal stability on microstructure.
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