The effects of the amount and particle size of alumina on the densification and flexural strength of the feldspathic porcelain bodies were investigated. Mixed powder was processed by the spray dryer and fired after forming. Samples with 50 mass% of alumina added had a maximum flexural strength of 150 Mpa after being fired at 1350°C. Flexural strength and packing ratio were increased with the firing temperature and showed the maximum value at a certain firing temperature, then decreased. The relationship between packing ratio and flexural strength indicated a linear correlation. When more alumina was added, the gradient (k value) became bigger. Flexural strength and k value were maximized at an alumina particle size of about 1-2 μm.
|Number of pages||11|
|Journal||Ceramic Engineering and Science Proceedings|
|Publication status||Published - 1996 Jan 1|
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry