Sintering Aids in Silicon Carbide Densification

• Autorzy: Stobierski, L. , Gubernat, A.
• Języki publikacji: EN

Abstrakty

EN

The main objective of this paper is to explain the role of activators in silicon carbide sintering. On the basis of dihedral angle measuremets in model systems the authors postulate rejection of the S. Prochazka hypothesis saying that boron and carbon modify the grain-boundary and surface energy. Evolution of microstructure observed on model sinters and the data available in the literature enabled kinetic explanation of the role of activators. Accordingly, carbon function is to lower the pressures of thermal decomposition products and to hinder the mass transport processes ineffective in sintering while boron function is to activate bulk and grain-boundary diffusion.

Słowa kluczowe

EN

silicon carbide; sintering; sintering activators

• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 1999
• Tom: Vol. 47, nr 4
• Strony: 411-421
• Opis fizyczny: 10 rys., bibliogr. 17 poz.

Twórcy

autor

Stobierski, L.

autor

Gubernat, A.

• University of Mining and Metallurgy, Faculty of Materials Science and Ceramics, Department of Advanced Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland (Akademia Górniczo-Hutnicza)