Low-valued raw materials challenge the common eligibility criteria for triaxial ceramics

Echeverrigaray, Sérgio G.; Emiliano, J. V.; Segadães, Ana M.; Cruz, Robinson C.D.

doi:10.1016/j.ceramint.2016.03.178

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…also indicated spinel formation at an earlier temperature (∼950°C) for noncalcareous clays compare to that of calcareous clays. Diffraction peaks typical of Kaolinite usually disappear by 800°C 10,14 . Feldspar particles in this temperature zone begin to react with SiO 2 from Meta kaolin to form a eutectic liquid.…”

Section: Resultsmentioning

confidence: 99%

“…Ouahabi et al 13 also indicated spinel formation at an F I G U R E 7 X-ray diffractometer (XRD) diffraction pattern of ceramic biscuit body earlier temperature (∼950 • C) for noncalcareous clays compare to that of calcareous clays. Diffraction peaks typical of Kaolinite usually disappear by 800 • C. 10,14 Feldspar particles in this temperature zone begin to react with SiO 2 from Meta kaolin to form a eutectic liquid. Beyond 1100 • C, the spinel releases silica, and mullite content has started growing.…”

Section: Biscuit Firingmentioning

confidence: 99%

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Investigation of methods to prevent pin‐holing defect in tableware ceramic industry

Hasanuzzaman

Islam

Rashid

2022

Int J Ceramic Engine & Sci

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Pin‐holing is one of the major glazing defects that the tableware ceramic industry is experiencing. It is evident from this research work that the pin‐holing defect can be prevented or at least reduced by optimizing composition and sintering profile, which in turn yields pin‐hole‐free tableware ceramics. Differential scanning calorimeter/thermo gravimetric analysis and dilatometer are found to be effective to understand the thermal behavior of specific ceramic tableware bodies and glaze. Dilatometry was employed to investigate the densification behavior and it was found that densification of the ceramic body reached completion by 1300°C. The final optimum firing temperature and soaking time, which are believed to influence the microstructure and mechanical properties of the ceramicware, were found to be 1300°C and 90 min, respectively. The microstructural change of the ceramic body and glaze sintered at different temperatures and times is observed under field emission scanning electron microscopy. It was found that the existence of pin‐holing defect largely depends on the feldspar and quartz content in glaze raw material as well as the applied firing profile, and the result was found satisfactory when the ratio (quartz/feldspar) was ∼2.

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Section: Resultsmentioning

confidence: 99%

Section: Biscuit Firingmentioning

confidence: 99%

Investigation of methods to prevent pin‐holing defect in tableware ceramic industry

Hasanuzzaman

Islam

Rashid

2022

Int J Ceramic Engine & Sci

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“…A characteristic alumina/fluxes weight ratio in feldspars averages 1.4; in nephelinesyenites and phonolites, this ratio is about 1.1 and 0.5 in rock-related fluxing wastes [33,34,[43][44][45]. It is known that the alumina/fluxes ratio affects the viscosity of the liquid phase formed during firing [46].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mechanically Activated Nepheline-Syenite Additive on the Physical–Mechanical Properties and Frost Resistance of Ceramic Materials Composed of Illite Clay and Mineral Wool Waste

Pranckevičienė

Pundienė

2023

Materials

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This study investigates the coupling effect of mechanically activated nepheline-syenite (NS) and mineral wool melt waste (MWMW) on the physical–mechanical properties of a ceramic body. The results indicate that an optimal amount (10–20%) of NS additive promotes the formation of the smallest pore size from 0.001 to 0.01 µm, as well as improves physical, mechanical, and durability properties of the ceramic samples with MWMW, when fired at temperatures between 1000 and 1080 °C. As the NS content increases, the composition becomes more alkaline, leading to enhanced vitrification and the formation of a glass phase during firing. This reduces open porosity, modifies pore size distribution, and enhances compressive strength and frost resistance. An NS content of 15% produces the best results, increasing the smallest pore fraction and yielding favourable properties, such as reduced open porosity, water absorption and density, increased compressive strength, and does not affect the linear shrinkage. The frost resistance test demonstrates that the coupling effect of NS additive and MWMW improves the samples’ resistance to freeze–thaw cycles, with the best performance observed at 15% NS content. The study also highlights the usefulness of structural parameters and ultrasound testing for assessing and predicting the frost resistance of ceramic samples.

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Study of the Influence of Sintering Temperature on Water Absorption in the Manufacture of Porcelain Cups

Duarte

Alves

Pereira

2018

Advanced Structured Materials

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Low-valued raw materials challenge the common eligibility criteria for triaxial ceramics

Cited by 7 publications

References 19 publications

Investigation of methods to prevent pin‐holing defect in tableware ceramic industry

Investigation of methods to prevent pin‐holing defect in tableware ceramic industry

Effect of Mechanically Activated Nepheline-Syenite Additive on the Physical–Mechanical Properties and Frost Resistance of Ceramic Materials Composed of Illite Clay and Mineral Wool Waste

Study of the Influence of Sintering Temperature on Water Absorption in the Manufacture of Porcelain Cups

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