Thermal Expansion of Nepheline-Leucite Ceramic Composites
1995 Volume 103 Issue 1197 Pages 523-524
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1995 Volume 103 Issue 1197 Pages 523-524
High-thermal-expansion ceramics consisting of nepheline (NaAlSiO4) and leucite (KAlSi2O6) were prepared by sintering mixture of their powders. The ceramics obtained had the relative density of 70 to 90%, bending strength of 60 to 100MPa and linear thermal expansion coefficient of 15×10-6/°C to 28×10-6/°C from room temperature to 600°C. The thermal expansion coefficient of the ceramics increased with increasing leucite content.
