A study of zircon crystallization, structure, and chemical resistance relationships in ZrO2 containing ceramic glazes

Atkinson, Irina; Mocioiu, Oana Cătălina; Anghel, Elena Maria

doi:10.1016/j.bsecv.2021.07.002

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…The incorrect portion of different glaze compositions can cause a loss of load for the entire kiln as well as reduce the quality of the produced glaze. The ceramic glazes can be prepared from a mixture of different natural materials using different compositions and techniques [13]. Several studies are concerned with glaze development using different raw materials and other additional compositions to enhance glaze properties [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Possibility Of Obtaining Transparent Glaze From the Local Cl...mentioning

confidence: 99%

Possibility of obtaining Transparent Glaze from the Local clays of Qena Governorate

Abd-Elrahim,

Abdelmotalib,

Hassan

et al. 2023

مجلة الفنون التشکيلية والتربية الفنية

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Glaze is a glassy layer used to cover surfaces of different ceramic products. It gives ceramic surface hardness and high resistance to chemical and abrasion which contributes to enhancing the chemical and physical properties in addition to the aesthetics of the ceramic products. Production process of glaze is complex and expensive, as it requires accurate compositions of different materials most of which are expensive. herefore, the main aim of this study is to develop a transparent ceramic glaze from the Local clays of Qena Governorate. Three types of local clays used in this study were "Taffla" marl clay, "Hieba" Flood Clay, and Nile clay. The production processes were conducted at different combustion temperatures of 1000, 1050, and 1100°C using borax as alkaline fluxing agents at different ratios of 50%, 60%, and 70%. The glaze is produced only from the clay and fluxing agent without the need to add any former or bonding refractory materials which are common in traditional methods of glaze production. The required tests were carried out for clay and glaze to determine their different characteristics. Results showed that among the three products, the best results were achieved at combustion temperature of 1050°C and the highest alkaline fluxing agent ratio of 70%. Moreover, the obtained results demonstrated that the possibility of the production of transparent ceramic glaze directly from special types of clay without adding any other material which minimize effort, time glaze.

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Section: Possibility Of Obtaining Transparent Glaze From the Local Cl...mentioning

confidence: 99%

Possibility of obtaining Transparent Glaze from the Local clays of Qena Governorate

Abd-Elrahim,

Abdelmotalib,

Hassan

et al. 2023

مجلة الفنون التشکيلية والتربية الفنية

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“…Zircon is one of the potential materials for industrial applications owing to its good thermal stability, relatively low thermal expansion coefficient of 5,3×10 -6 / o C (25 to 1500 o C) [1,2], ability to improve ceramic brightness and protection against complex and high wear resistant objects [3]. Zircon was also used on a zircon-mullite system or as a filler in polymethyl methacrylate (PMMA)based composites to improve their mechanical and thermal properties [4,5].…”

Section: Introductionmentioning

confidence: 99%

Temperature and Molarity Effects on the Synthesized Zircon Crystal Cells

Pratama,

Valhalla,

Ely

et al. 2023

MSF

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A study was carried out on the effect of hydrochloric acid (HCl) temperature and molarity during the dissolution process on the crystal cell of ZrSiO4 of zircon powders derived from zircon sand mined in Kereng Pangi, Central Kalimantan. The study is a continuation of the previous work and is aimed at associating the process and structural parameters of the zircon phase in the product. The synthesis was started with a well-established route in our laboratory, i.e., magnetic separation and milling for 2 hours, but the subsequent leaching using the HCl step was carried out at varying temperatures and concentrations. The temperature variations used were 80°C, 90°C, and 100°C, while the molar variations of HCl were 0.5 and 2 M. Then, the various products were further leached using 7 M sodium hydroxide (NaOH) to yield zircon powders subjected to X-ray diffraction (XRD) investigation. The XRD data analysis using Rietica software found that at the concentration of 0.5 M, the increasing temperature decreased in zircon cell volume but increased the tetragonality parameter c/a. However, opposite results occurred at the concentration of 2 M HCl. In general, we found that the impurity levels in the zircon powders may be associated with its cell volume and tetragonality parameters, i.e., the more the quartz content in the zircon powder, the smaller the zircon cell volume and tetragonality.

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“…al., 2013;Gauna et. al., 2015;Atkinson, Mocioiu & Anghel, 2021). Furthermore, it can also be used for immobilisation of nuclear waste and as an additive in whitening agents in glaze (Li et.…”

Section: Introductionmentioning

confidence: 99%

Influence on Ratio of NaOH/ZrSiO4 in Alkali Fusion for Amang Zircon Sand

Subuki¹

2022

ASMScJ

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Amang Zircon Sand from Amang Onn Sdn. Bhd. mineral company has a high composition of zirconium at 61.63 wt% and low silicon composition at 4.90 wt%. The high composition of zirconium in Amang zircon sand indicates the possibility to synthesise it into a zirconia. Zirconium was synthesised using alkali fusion method with different ratio of NaOH/ZrSiO4 to determine the optimum ratio based on the zirconium yield. Alkali fusion method is coupled with thermal treatment as it will produce a higher yield of zirconium with lower impurities. Then it will be leached with deionised water and hydrochloric acid (HCl). The synthesised zirconium was characterised through X-Ray fluorescence (XRF) spectroscopy, X-Ray diffraction (XRD) and particle size distribution (PSD) analysis. The XRF analysis after the fusion and thermal treatment shows a high composition of zirconium as well as great reduction of silicon. 1.2NaOH/ZrSiO4 is determined to be the optimum ratio as it has the lowest silicon impurity of 2.11 wt% and high yield of zirconium at 71.40 wt%. The low impurities will reduce the chance of cracking and maximising the efficiency of zirconia. It is supported by XRD patterns that are dominated by high zirconium peaks. The zirconium oxychloride obtained after acid leaching has a high zirconium composition. This shows that it is possible to use Amang zircon sand as a precursor to synthesis a zirconia using alkali fusion method with sodium hydroxide.

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A study of zircon crystallization, structure, and chemical resistance relationships in ZrO2 containing ceramic glazes

Cited by 8 publications

References 26 publications

Possibility of obtaining Transparent Glaze from the Local clays of Qena Governorate

Possibility of obtaining Transparent Glaze from the Local clays of Qena Governorate

Temperature and Molarity Effects on the Synthesized Zircon Crystal Cells

Influence on Ratio of NaOH/ZrSiO4 in Alkali Fusion for Amang Zircon Sand

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