Abstract
Silicon nitride was chosen as the composite matrix with alumina platelets as dispersoids. Alumina reacted with the matrix thus decreasing the relative volume of effective platelets and modifying the intergranular glassy phase content and composition. The kinetics of α to β and α to β’-sialon phase transformations were studied. Pre-exponential factors and activation energies for transformation rates of distinct systems fall in the same compensation law line thus denoting that the overall transformation process is controlled by a combination of elementary mechanisms of equal nature.
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© 1997 Springer Science+Business Media Dordrecht
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Oliveira, F.J., Silva, R.F., Vieira, J.M. (1997). Phase Transformation During Hot-Pressing of Si3N4-Al2O3 (P) Composite Materials. In: Babini, G.N., Haviar, M., Šajgalík, P. (eds) Engineering Ceramics ’96: Higher Reliability through Processing. NATO ASI Series, vol 25. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5798-8_18
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DOI: https://doi.org/10.1007/978-94-011-5798-8_18
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