Effect of wollastonite addition on sintering of hard porcelain

Türkmen, Ömer; Kucuk, Abdullah; Akpinar, S.

doi:10.1016/j.ceramint.2014.12.126

Cited by 49 publications

(31 citation statements)

References 13 publications

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“…Wollastonite is very suitable material for acceleration of sintering process in porcelain body. Only 1 wt.% addition of wollastonite is able to decrease iring temperature (about 25°C) in the mixture with kaolin, quarz and potassium feldspar rock [9].…”

Section: Introductionmentioning

confidence: 99%

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Sokolar¹

2018

Sintering of Functional Materials

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The sintering of whiteware (porcelain) body can be afected by using luxing agents or binders. The chapter describes the sintering process of porcelain body in case of different luxing agent (diferent feldspar rocks, bone ash, zeolite) and binder (kaolin vs. calcium aluminate cement) utilization in the porcelain raw material mixture. Sintering process is presented according to thermodilatometrical curves and sintering temperatures especially.

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Section: Introductionmentioning

confidence: 99%

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Sokolar¹

2018

Sintering of Functional Materials

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“…In this context wollastonite acts as a fiber-reinforcement similar as in fiber composites. It improves the strength of ceramic green bodies and offers low firing temperature due to fluxing characteristics [9][10][11]. From this point of view, it is worthwhile investigating the idea of using another fiber material, basalt fiber, as an alternative raw material for clay-based ceramics.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Basalt Fibers as a Raw Material for Clay Ceramic Production

Vichaphund¹

2016

Ceramics - Silikaty

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“…A porcelain tile is a ceramic material made of kaolin clay, feldspar and quartz in the range of 40-50 wt.%, 35-45 wt.% and 10-25 wt.% respectively [1,2]. Improved physical and mechanical properties of porcelain tiles have often been at firing range of 1200-1400°C, using a fast firing schedule [3]. Typical properties of porcelain tiles are; low water absorption and high flexural strength (>30MPa).Today, the production of porcelain tiles has increased and the sales have improved worldwide [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Quartz promotes thermal and dimensional stability thus preventing warping. However, for glassy and vitreous materials like porcelain, the principle factor influencing flexural strength is quartz particle size [3,6,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…According to the pre-stressing theory, the variation in thermal expansion coefficient, α, between the glassy phase (α~3x10 -6 K -1 ) and undissolved quartz particles (α~23x10 -6 K -1 ) in the temperature range of 20 to 700°C induces compressive stress on the glassy phase, hence improving flexural strength. Importantly, fine quartz particles dissolve at a faster rate during sintering before the coarse particles will undergo a major size reduction [3]. This changes the morphology of the pore from large, irregular and interconnected in samples with coarse quartz particle size to small, regular and isolated in samples with fine quartz particle size.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Quartz Particle Size on Sintering Behavior and Flexural Strength of Porcelain Tiles Made from Raw Materials in Uganda

Ochen

D’ujanga

Oruru

2019

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The presence of quartz particle size (> 45 µm) has a deleterious effect on physio-mechanical properties of porcelain tiles. The effect is due to various factors including microstructure (pore) after sintering. This study aims at investigating the effect of quartz particle size (QPS) on sintering behavior and flexural strength of porcelain tiles made from raw materials in Uganda. Samples containing fine, medium and coarse QPS were pressed at 40 MPa, fired from 1150-1350°C at a firing rate of 60°C/min, and soaked for 1 hour. The influence of QPS on linear shrinkage, water absorption and flexural strength was determined. Microstructure analysis of the fired samples was carried out using Scanning Electron Microscope (SEM), and phase identification was studies using x-ray diffraction. The SEM showed large-interconnected pores for coarse QPS, and smaller-isolated pores for fine QPS. At optimum sintering temperature, samples with fine, medium and coarse QPS had values of 0.47, 0.9 and 7.1% water absorption respectively. Pressed tiles with ≤5% water absorption are classified as group BI a (porcelain tiles) and those > 0.5-≤3% as group BI b suitable as floor or wall tiles (ISO 13006). Also, the average flexural strength of 33, 18 and 8 MPa was exhibited by samples with fine, medium and coarse QPS respectively. The results indicate that only samples with fine and medium QPS satisfy the requirement ≥ 35±2 MPa and > 12 MPa for floor and wall tiles respectively (ISO 13006).

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Effect of wollastonite addition on sintering of hard porcelain

Cited by 49 publications

References 13 publications

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Utilization of Basalt Fibers as a Raw Material for Clay Ceramic Production

Effect of Quartz Particle Size on Sintering Behavior and Flexural Strength of Porcelain Tiles Made from Raw Materials in Uganda

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