The Effect of Nepheline Syenite Addition on Sanitaryware Body
Abstract
The effect of the addition of Nepheline syenite on the sintering, and properties of a sanitaryware porcelain body was studied. Two ceramic bodies were compared: a commercial sanitaryware body and one, where 40% of the mass of Na feldspar was substituted nepheline syenite. The sintering was evaluated by the linear shrinkage, the water absorption. Samples, sintered at 1220 and 1190 ºC, were used for the evaluation of the the bending strength. The addition of Nepheline syenite had a positive effect on the formation of the liquid phase during the sintering. The sintering and the mechanical properties were improved by heat treatment in the 1190ºC range
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References
- [1] W.D. Kingery, Introduction to Ceramics, J.Wiley & Sons, New York, 1976. [2] J.S. Reed, Principles of Ceramic Proceedings, J. Wiley & Sons, New York, 1995. [3] W.M. Carty, U. Senapati, Porcelain—raw materials, processing, phase evolution, and mechanical behavior, J. Am. Ceram. Soc. Vol. 81 (1) pp. 3–20, 1998 [4] T.Aydın, A.Kara, “Effect of spodumene addition on pyroplastic deformation of porcelain stoneware” Journal of Ceramic Processing Research. Vol. 15, No. 6, pp. 486-491, 2014 [5] P.W. Harben, The Industrial Minerals Handy Book: A Guide to Markets, Specifications and Prices. 4th edition. London: Industrial Minerals Information 2002.