The Effect of Different Fluxes on Thermal Behavior of Floor Tile Glazes

• Authors: Z. Ozturk , B. Yildiz
• Languages of publication: EN

Abstracts

EN

Nepheline-syenite is a fluxing agent used in sanitary ware, electrical porcelain and chinaware bodies, in order to reduce firing temperature and to increase the alkali level in the liquid glassy phase. Compared to pure feldspars, the advantages coming from the use of nepheline-syenite are: (i) the content of potassium and sodium is higher and (ii) the melting temperature is generally lower than that of potassium-feldspar, which always contains other phases, such as quartz, which shift the melting point to higher temperatures. The content of Al₂O₃ is high and the content of SiO₂ is lower in nepheline-syenite with respect to feldspars (considering that in feldspar Al₂O₃/SiO₂ is about 0.2, whereas in nepheline Al₂O₃/SiO₂ is 0.5). The aim of this study is to compare the influence of the nepheline-syenite and feldspars on the thermal behavior of the floor tile glazes. For this aim; several formulations were prepared with industrial raw materials. After applying the glazes on bodies; the compositions were fired in industrial floor tile kiln ( ≈1190°C, for 43 min). Thermal behaviors of glazes were measured by hot stage microscope and the crystalline phases were identified by X-ray diffraction. Color properties and glossiness were measured for comparing the aesthetic characteristics.

Keywords

EN

81.05.Je

Discipline

• 81.05.Je: Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)(for ceramics in electrochemistry, see 82.45.Yz)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1183-1185

Dates

published

2015-04

Contributors

author

Z. Ozturk

• Nevşehir HacıBektaş Veli University, Faculty of Engineering and Architecture, Department of Metallurgical and Materials Engineering, Nevşehir, Turkey

author

B. Yildiz

• Yurtbay Seramik, Oklubalı Köyü İnönü/Eskişehir, Turkey

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Identifiers

DOI

10.12693/APhysPolA.127.1183