Zircon-free frits suitable for single fast-firing opaque wall tile glazes and their industrial productions

Pekkan, Keriman; Karasu, Bekir

doi:10.1016/j.jeurceramsoc.2008.10.010

Cited by 35 publications

(7 citation statements)

References 12 publications

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“…Pekkan and Karasu [12], explained the lower glossiness of the glazes with the increased ratios in the Al 2 O 3 / R 2 O and Al 2 O 3 / RO in their studies. Therefore, alumina and alkaline oxide content must have to be considered together.…”

Section: Methodsmentioning

confidence: 90%

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

Öztürk

Yıldız

2015

Acta Phys. Pol. A

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Nepheline-syenite is a uxing agent used in sanitary ware, electrical porcelain and chinaware bodies, in order to reduce ring 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 inuence of the nepheline-syenite and feldspars on the thermal behavior of the oor tile glazes. For this aim; several formulations were prepared with industrial raw materials. After applying the glazes on bodies; the compositions were red in industrial oor tile kiln (≈ 1190• C, for 43 min). Thermal behaviors of glazes were measured by hot stage microscope and the crystalline phases were identied by X-ray diraction. Color properties and glossiness were measured for comparing the aesthetic characteristics.

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Section: Methodsmentioning

confidence: 90%

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

Öztürk

Yıldız

2015

Acta Phys. Pol. A

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“…A good example of glazes with extremely different final parameters, which depend on the chemical composition and the firing process, are transparent glazes and glass-crystalline glazes. Transparent glazes are usually characterized by a high degree of gloss [9] and create a glassy, almost completely amorphous coating. Glass-crystalline glazes may, however, be characterized by: higher mechanical resistance, degree of opacity [10], lower gloss.…”

Section: Introductionmentioning

confidence: 99%

Influence of SrO content on microstructure and crystallization of glazes in the SiO2–Al2O3–CaO–MgO–K2O system

Gajek

Rapacz-Kmita

Leśniak

et al. 2019

J Therm Anal Calorim

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The effect of the SrO addition on the microstructure and structure of the glazes from the SiO 2-Al 2 O 3-CaO-MgO-K 2 O system was investigated in this study. The results were obtained by testing the ability of the frits crystallization, the stability of the crystallizing phases during the single-step fast-firing cycle depending on their chemical composition and the effect of addition of strontium oxide. Differential scanning calorimetry (DSC) curves showed that all glazes crystallized, and diopside and anorthite were mainly identified as dominant phases in the obtained glazes, while the size and amount of each depended on the amount of SrO introduced. The thermal characteristic of the frits was carried out using DSC, and crystalline phases were determined by X-ray diffractometry. The glaze microstructure was investigated by scanning electron microscopy and transmission electron microscopy. Additional information on the microstructure of frits was derived from spectroscopic studies in the mid-infrared range.

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“…Depending on the frits used, it is possible to obtain smooth surfaces with a high gloss level [9] or even matt, glass-crystalline ones [8]. There are a number of works on various glass systems such as CaO-MgO-SiO 2 [10,11], CaO-MgO-Al 2 O 3 -SiO 2 [11][12][13][14][15], Li 2 O-CaO-MgO-Al 2 O 3 -SiO 2 [11,16], (Na 2 O, K 2 O, ZrO 2 , ZnO)-CaO-MgO-Al 2 O 3 -SiO 2 [14,15,[17][18][19][20][21][22], CaO-ZrO 2 -SiO 2 [11] or MgO-Al 2 O 3 -SiO 2 [15,[23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Study of the correlation between the composition, structure and crystallization in frits designed for single fast-firing glazes with variable BaO content

Gajek

2019

J Therm Anal Calorim

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The paper presents the results of investigation on the development of frits for single fast-firing glazes with variable BaO content based on the SiO 2 -Al 2 O 3 -CaO-MgO-ZnO-(BaO) system, fired at a maximum temperature of 1220 °C. The study of the correlation between the composition, structure and crystallization of frits and glazes was carried out using various methods for materials characterization, including differential scanning calorimetry (DSC), dilatometry (DIL), hot-stage microscopy (HSM), X-ray diffraction and scanning and transmission electron microscopy. DSC and X-ray diffraction showed a high tendency to crystallize the tested frits. DSC curves showed that all glazes crystallized during heating in a narrowtemperature range ≈ 938-955 °C, and the introduction of BaO shifted the maximum of exothermic peaks toward higher temperatures. X-ray analysis revealed the presence of diopside and anorthite as the main crystalline phases. The introduction of 5 mass% BaO to the frit composition promoted the crystallization of the additional crystalline phase of barium feldspar (BaAl 2 Si 2 O 8 ). In addition, in this composition a strong exothermic effect on the DSC curve at the cooling stage was observed. The analysis of data obtained from thermal studies also showed that the addition of BaO to the chemical composition of the frits resulted in a decrease in the glass transition temperature (T g ) and in reduction in viscosity calculated on the basis of the Vogel-Fulcher-Tammann equation (HSM, DIL).Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Zircon-free frits suitable for single fast-firing opaque wall tile glazes and their industrial productions

Cited by 35 publications

References 12 publications

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

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

Influence of SrO content on microstructure and crystallization of glazes in the SiO2–Al2O3–CaO–MgO–K2O system

Study of the correlation between the composition, structure and crystallization in frits designed for single fast-firing glazes with variable BaO content

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