The Replacement of Seashells with Calcite in White Ceramic Glaze Preparation

Year 2020, Volume: 24 Issue: 5, 956 - 964, 01.10.2020

Levent Koroglu , Ceren Pekşen

https://doi.org/10.16984/saufenbilder.728340

Cited By: 3

Abstract

In this study, the effect of seashell utilization as a replacement for calcite on the surface features and optical properties of white ceramic glazes was investigated. As received seashells collected from Black Sea beaches of Samsun, Turkey and purified seashells at 700°C for 1 h were used as calcite replacement by 15 wt.%. Seashell powders were incorporated to white glaze compositions which are applied on the surface of different fired clay bodies such as red clay, chamotte, white and porcelain by dipping technique. Next, the glazed green bodies were sintered at 1100ºC for 8 h. Following to TG-DTA, heating microscope, XRD and optical analysis, the obtained results exhibited that as received seashell powder (SP-1) was composed of calcite (CaCO3), whereas purified seashell powder (SP-2) comprised aragonite (CaCO3) and calcium oxide (CaO). The iron (hematite) content in red clay and the impurities in seashells composition caused specks and crawlings on the surface of glazed red clay bodies and of some glazes containing seashell, respectively. In generally, the higher CaO content in SP-2 enhanced gloss (60°) values, and whiteness values of most glazed surfaces were closed to each other. The color of chamotte bodies increased redness-greenness values. The variations in optical parameters were mainly associated with the difference in body compositions. SP-1 contained glaze, applied on porcelain body, was selected as optimal because that had 33 gloss value, high whiteness (87) and no surface defect. Therefore, the utilization of as received seashells by 15 wt.% as calcite replacement allows eco-friendly and cost-effective production of white ceramic glazes without any additional heat treatment.

Keywords

White Ceramic Glazes, Seashells, Calcite, Optical Properties, Clay Products

References

• D.W. Richerson, The magic of ceramics, John Wiley & Sons, New Jersey, 2012.
• R. Casasola, J.M. Rincónand, M. Romero, “Glass–ceramic glazes for ceramic tiles: a review”, J. Mater. Sci., vol. 47, pp. 553-582, 2012.
• R.A. Eppler and D.R. Eppler, Glazes and glass coatings, The American Ceramic Society, Ohio, 2000.
• M. Burleson, The Ceramic Glaze Handbook: Materials, Techniques, Formulas, Lark Books, New York, 2003.
• W.F. Tegethoff, Calcium Carbonate: From the Cretaceous Period into the 21st Century, Springer, Basel, 2001.
• N.M. Neves and J.F. Mano, "Structure/ mechanical behavior relationships in crossed-lamellar sea shells", Materials Science and Engineering: C, vol. 25, no. 2, pp. 113-118, 2005.
• S. Chowdhury and P. Saha, "Sea shell powder as a new adsorbent to remove Basic Green 4 (Malachite Green) from aqueous solutions: Equilibrium, kinetic and thermodynamic studies", Chemical Engineering Journal, vol. 164, no. 1, pp. 168-177, 2010.
• C. Peksen, L. Koroglu, and H. Kartal, "Utilization of Seashells in Matte Glaze Preparation", International Journal of Applied Ceramic Technology, pp. 1-8, 2020.
• M. Ryu, H. Kim, M. Lim, K. You and J. Ahn, “Comparison of dissolution and surface reactions between calcite and aragonite in l-glutamic and l-aspartic acid solutions”, Molecules, vol. 15, pp. 258-269, 2010.
• K.S.P. Karunadasa, C.H. Manoratne, H.M.T.G.A. Pitawala and R.M.G. Rajapakse, “Thermal decomposition of calcium carbonate (calcite polymorph) as examined by in-situ high-temperature X-ray powder diffraction”, Journal of Physics and Chemistry of Solids, vol. 134, pp. 21-28, 2019.
• R.C. Ropp, Encyclopedia of the Alkaline Earth Compounds, Elsevier, Oxford, 2013.
• R.J. Lewis, Food Additives Handbook, Springer, New York, 1990.
• B.D. Cullity and S.R. Stock, Elements of X-Ray Diffraction, Addison-Wesley Publishing, Massachusetts, 1956.
• R.A. Eppler and D.R. Eppler, "Controlling the Gloss of Leadless Glazes," Ceram. Eng. Sci. Proc., vol. 16, no. 1, pp. 40-5, 1995.
• A.R. Jamaludin, S.R. Kasim and Z.A. Ahmad, “The effect of CaCO3 addition on the crystallization behavior of zno crystal glaze fired at different gloss firing and crystallization temperatures”, Science of Sintering, vol. 42, pp. 345-355, 2010.
• F. Cardelli, Materials Handbook: A Concise Desktop Reference, Springer-Verlag, London, 2008.
• C.N. Djangang, A. Elimbi, U.C. Melo, G.L. Lecomte, C. Nkoumbou, J. Soro, J.P. Bonnet, P. Blanchart and D. Njopwouo, “Sintering of clay-chamotte ceramic composites for refractory bricks”, Ceramics International, vol. 34, pp. 1207-1213, 2000.