Microstructural study of opaque glazes obtained from frits of the system: SiO2-Al2O3-B2O3-(P2O5)-CaO-K2O-TiO2

Bou, E.; Moreno, A.; Escardino, A.; Gozalbo, A.

doi:10.1016/j.jeurceramsoc.2006.04.148

Cited by 37 publications

(18 citation statements)

References 3 publications

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“…The increase of mobility of glass is observed in K 2 O and Na 2 O-containing glazes during ring [9]. Glaze fusibility could be increased at low temperatures by using Na 2 O instead of K 2 O in single red tile manufacture [10]. Thus, it is seen that T softening , T melting of S.2 and S.4 glazes were lower than that of S.1 glaze with the potassium feldspar.…”

Section: Methodsmentioning

confidence: 99%

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: 99%

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

Öztürk

Yıldız

2015

Acta Phys. Pol. A

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“…5(b)5(f ). 18) 60 discrete droplet phase separation structures were chosen randomly from Figs. 5(a)5(f ) to investigate the average size of phase separation droplets by the Image-Nano Measurer software.…”

Section: )13)mentioning

confidence: 99%

Effects of microstructure on the sky-green color in imitating ancient Jun glazes

Zhu

Shi

Wang

et al. 2016

J. Ceram. Soc. Japan

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The sky-green glaze of ancient Jun ware was successfully imitated with the addition of 4 wt % calcium phosphate for introducing the phosphorus (P) to the composition. Effects of the calcium phosphate contents on the chromaticity, precipitated phase and microstructure of sky-green glaze were investigated. Based on the analysis of colorimeter, XRD, FT-IR, XPS and SEM, a possible coloring mechanism was proposed to explain the variation of glaze colors with the increasing of calcium phosphate content. The results indicated that the addition of calcium phosphate contributed to increasing the content of calcium iron phosphate [Ca 19 to Fe 3+ and the increased size of phase separation droplets weakened the structural color, which increased the L* and b* value of glazes. Therefore, the color of sky-green glaze got more green and white gradually.

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“…These include clay minerals, alkaline earth oxides (from carbonate precursors) together with feldspars (which function as source of alkali oxides), alumina and silica [1]. Materials such as ZrO 2 , TiO 2 , SnO 2 and ZrSiO 4, which give opacity to the glaze, can also be present [2][3][4][5]. Understanding and predicting the properties and behavior of glazes, and the effect of additives can be aided by a knowledge of the atomic-scale structure of such materials.…”

Section: Introductionmentioning

confidence: 99%

Structure property relations in multicomponent oxide systems with additions of TiO2 and ZrO2 for glaze applications

Atkinson¹,

Teoreanu²,

Mocioiu³

et al. 2010

Journal of Non-Crystalline Solids

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The influence of the additives (10 weight% rutile, anatase and zirconia) on the atomic scale structure and microstructure of a base glaze (60 wt% feldspar, 15 wt% quartz, 8 wt% kaolin, 12 wt% dolomite and 5 wt% zinc oxide) are investigated. The morphology and structure of the glazes were determined by Scanning Electron Microscopy, X-ray diffraction, infra-red spectroscopy, as well as 27 Al and 29 Si magic angle spinning (MAS) NMR. Microscopy and X-ray diffraction revealed that the opacity was caused by crystals formed during thermal treatment. Although there are clearly crystalline phases present NMR shows that the heat treated glazes are dominated by the glassy component meaning the opacity is largely conveyed by the added oxide. The relationship between composition, structure and thermal expansion coefficient of the glazes is examined.

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Microstructural study of opaque glazes obtained from frits of the system: SiO2-Al2O3-B2O3-(P2O5)-CaO-K2O-TiO2

Cited by 37 publications

References 3 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

Effects of microstructure on the sky-green color in imitating ancient Jun glazes

Structure property relations in multicomponent oxide systems with additions of TiO2 and ZrO2 for glaze applications

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