Carbothermal Reduction and Nitridation as a Production Method of Beta-sialon

• Autorzy: Sopicka-Lizer M. , Serkowski S.
• Języki publikacji: EN

Abstrakty

EN

Sialon ceramics appear to be an attractive engineering material because of their excellent mechanical and thermal properties. Carbothermal production can be the most economical route for the production of the relevant sialon powders if some problems of multiphase composition are overcome. Thermodynamic calculations of the equilibrium composition in the Si-O-N-C and Al-O-N-C systems have been performed in order to predict the most suitable parameters for carbothermal reduction and nitridation. The kinetic parameters influencing the process are reviewed. Special attention is paid to the type of phases occuerring during several stages of the reduction. A new model of chemical reactions in the SiO2-Al2O3-C-N2 system has been proposed.

Słowa kluczowe

EN

carbothermal; nitridation; beta-sialon; thermodynamics; kinetics; reaction model

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 1999
• Tom: Vol. 47, nr 4
• Strony: 423--439
• Opis fizyczny: 8 rys., bibliogr. 51 poz.

Twórcy

autor

Sopicka-Lizer M.

autor

Serkowski S.

• Silesian University of Technology, Department of Materials Science, ul. Krasińskiego 8, skr. poczt. 221, 40-019 Katowice, Poland (Katedra Nauki o Materiałach, Politechnika Śląska),