Effect of partial substitution of alkaline oxides with lithium oxide (Li2O) on low-temperature ceramic glaze
DOI:
https://doi.org/10.35560/jcofarts1254Keywords:
Alkaline oxides, Lithium oxides, Low temperature glaze, Glazes propertiesAbstract
The research aims to study the effect of adding (Li2O) to an alkaline glaze containing (K2O, Na2O). Although all the alkaline oxides have common properties, each oxide has something that distinguishes it. The molecular weight of (Li2O) is two times less than that of (Na2O) and three times that of (K2O). Therefore, it is added in small proportions. In addition, it is a very strong flux, so it is not used alone, but rather replaces a part of other alkaline oxides. It was added to an alkali glass that matured at a temperature of 980CO in proportions (2.0,1.4,1.2,0.8,0.4%) instead of (Na2O), using lithium carbonate (Li2CO3) as an oxide source. The glazes mixtures were applied to a white pottery body, and the samples were fired and cooled according to programmed timings. After that, the tests and calculations were carried out: virtual and microscopic examinations, density, viscosity, surface tension, thermal expansion, hardness and scratch resistance. After analyzing and discussing the results, it was found that (Li2O) has varying effects on the properties of glazes, some of which are effective and others are less effective
References
Abu Safiya, A. (1982). Engineering Physical Methology. Baghdad, Iraq: University of Technology.
Al-Halwani, Y. (2018). The Guide to Physics. Cairo, Egypt: Dar Al-Ilm and Al-Iman for Publishing and Distribution.
Al-Hindawi, A. (1997). The Possibility of Using Local Raw Materials to Produce Opaque Ceramic Glass, Ph.D. Thesis. Baghdad, Iraq: University of Baghdad.
Allam, M. (1964). The Science of Ceramics: Glazing and Decoration, Part 2. Cairo, Egypt: Anglo-Egyptian Library.
Al-Zamzami, M., Al-Shaibani, M., & Al-Zindah, A.-S. (1996). Ceramic Technology: Raw Materials. Tripoli, Libya: Tripoli International Scientific Library.
Bansal, R. (2007). Solid and Fluid Mechanics. New Delhi, India: Laylni Publication Pvt. Ltd.
Britt, J. (2004). The Complete Guide to Mid-Range Glazes: Glazing and Firing at Cone 4-7. Asheville, NC, USA: Lark Books, Imprint of Sterling Co.
Chen, C., & Halloy, F. (1987). Turbulence Measurements and Flow Modeling. London, England: Hemisphere Publishing Corporation.
Fluegel, A. (2007). Thermal Expansion Calculation of Silicate Glasses at 210ْC, Based on the Systemic Analysis of Global Databases.
Fluegel, A. (2008, August 8). Global Model for Calculating Room-Temperature from the Glass Density from the Composition. Journal of American Ceramic Society.
Fluegel, A., Varshneya, A., Earl, D., Seward, T., & Oksoy, D. (2004). Melt Chemistry, Relaxation, and Solidification Kinetics of Glasses: The 106th Annual Meeting of the American Ceramic Society. Improved Composition-Property Relations in Silicate Glasses, Part I: Viscosity. Indianapolis, Indiana, USA: The American Ceramic Society.
Glass Viscosity Calculation. (n.d.). Retrieved from Glassproperties.com: http://glassproperties.com/viscosity/
Green, D. (1975). Understanding Pottery Glaze. London, England: Faber and Faber Limited.
Hamer, F. (1975). The Potter's Dictionary of Materials and Techniques. New York, USA.
Hamer, F., & Hamer, J. (2004). The Potter's Dictionary of Materials and Techniques. London, England: A&C.
Hansen, T. (n.d.). Li2O (Lithium Oxide, Lithia). Retrieved from Digitalfire.com: https://digitalfire.com/oxide/li2o
Kucuk, A., & Clare, L. (1999, October). An Estimation of the Surface Tension Silicate Glass Melts at 1400ْC Using Statistical Analysis. Glass Technology.
Rhordes, D. (1973). Clay and Glazes for the Potters. Rander, Pennsylvania, USA: Chilton Book Co.
Singer, F., & Singer, S. (1963). Industrial Ceramic. New York, USA: Chemical Publishing Co.
Surface tension calculation of glass melts at 1400°C. (n.d.). Retrieved from Glassproperties.com: http://glassproperties.com/surfacetension/
Taylor, J., & Bull, A. (1986). Ceramic Glaze Technology. London, England: The Institute of Ceramic, Pergamon Press.
Thermal expansion of silicate glasses at 210°C. (n.d.). Retrieved from Glassproperties.com: http://glassproperties.com/expansion/
Thornton, P., & Colangelo, V. (1990). Fundamentals of Engineering Materials. Englewood Inc.
Winger Ltd. (1981-1983). Materials and Equipments for Craft Pottery. Stokes on Trent, England.
