A new porcelainised stoneware material based on anorthite

Taskiran, M.U.; Demirkol, Nermin; Capoglu, Ahmet

doi:10.1016/j.jeurceramsoc.2004.03.017

Cited by 59 publications

(36 citation statements)

References 16 publications

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“…Sintered whiteware body (1220°C) has approximately two times higher modulus of rupture (110 MPa) than traditional porcelain body based on mullite due to lower content of glassy phase (only 30% for anorthitic whiteware body) [26]. Delocculation of raw materials mixture based on calcium aluminate cement for the production of whiteware body with low porosity is necessary [27].…”

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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“…which varies between 59 and 67% and crystalline phases, namely mullite (817%) and un-reacted residue of quartz grains (1728%) [1]. On the other hand, the anorthite based porcelainised stoneware contains ∼52 wt.% anorthite, ∼12 wt.% corundum and ∼8 wt.% cristobalite and glassy phase (∼28 wt.%) [12].…”

Section: Discussionmentioning

confidence: 99%

“…The chemical analyses of the raw materials and production details of anorthite based stoneware body are given in elsewhere [12]. In order to prepare 2 kg of batch, appropriate amounts of starting materials were weighed and wet mixed/milled for 48 h in a 5 l porcelain pot containing 100 alumina balls with diameter of ∼15 mm.…”

Section: Methodsmentioning

confidence: 99%

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The Effect of Surface Polishing on the Flexural Strength of Anorthite-based Porcelainised Stoneware

et al. 2015

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The eect of surface polishing on the exural strength of anorthite based porcelainised stoneware was studied. The exural strength results obtained from both polished and unpolished samples were analysed by using Weibull statistical method. The state of surfaces and microstructures of polished and unpolished samples were also characterised by prolometry and scanning electron microscopy. Typical exural strength value obtained from anorthite based stoneware body red at 1210• C was about 100 MPa. The average exural strength (σm) and Weibull modulus (m) values for as red, ground, and ground and polished specimens increased sequentially with polishing degree. The surface roughness measurements and microstructure observations showed that the severity of the surface aws declined as the polishing process proceeded. The obtainment of better strength behaviour with polishing was attributed to high crystalline to glassy phase ratio of the anorthite based porcelainised stoneware together with the formation of network structure of these anorthite crystals.

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“…After firing at 1220°C we obtained a porcelainised stoneware body containing 70 % crystalline and 30 % glassy phases with a high modulus of rupture (110 MPa) that is two times higher compared to conventional porcelainised stoneware materials based on mullite. 4 Calcium aluminate cements are white (according to the Al 2 O 3 content), high-purity hydraulic bonding agents providing controlled setting times and strength development for today's high-performance refractory products.…”

Section: Introductionmentioning

confidence: 99%

Non-traditional whiteware based on calcium aluminate cement

Sokolar¹

2016

Mater. Tehnol.

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The article introduces the differences in the properties of whiteware (porosity, strength, thermal expansion coefficient) when a non-traditional binder is used. Pure calcium aluminate cement and a mixture of kaolin and calcium aluminate cement compared with traditional plastic raw material for whiteware -kaolin -are used for the preparation of whiteware bodies with a constant content of non-plastic raw materials: K-Na feldspar and quartz sand. The results are discussed in connection with the microstructure of the fired body of prepared whitewares (mineralogical composition). Calcium aluminate cement (CAC) in whiteware raw-material mixtures is an interesting alternative to kaolin for a higher strength of the green and fired bodies. Using calcium aluminate cement reduces the sintering temperature of the fired body and significantly changes its mineralogical composition: anorthite is the main mineralogical phase instead of mullite, which is typical for standard porcelain bodies made from raw-material mixtures based on kaolin. The coefficient of thermal expansion increases with an increasing content of CAC in the raw-materials mixture. Keywords: calcium aluminate cement, kaolin, whitewarê lanek predstavlja razlike v lastnostih porcelana (poroznost, trdnost, koeficient toplotnega raztezka),~e se uporabi neobi~ajno vezivo.^isti kalcijev aluminatni cement in me{anica kaolina in kalcijevega aluminatnega cementa, v primerjavi s tradicionalno plasti~no sestavino porcelana -kaolina, so bili uporabljeni za kerami~na telesa s konstantno vsebnostjo neplasti~nih surovin; K-Na glinenec in kvar~ni pesek. Rezultati so razlo`eni v povezavi z mikrostrukturo telesa pripravljene keramike (mineralo{ka sestava) po`ganju. Kalcijev aluminatni cement (CAC), v me{anici surovin za keramiko, je zanimivo nadomestilo za kaolin, za vi{jo trdnost zelenega in`ganega telesa. Uporaba kalcijevega aluminatnega cementa zni`a temperaturo sintranja`ganega telesa in mo~no spremeni njegovo mineralo{ko sestavo; anortit je glavna mineralo{ka faza namesto mulita, ki je zna~ilen v standardnih porcelanskih telesih, izdelanih iz me{anice surovin na osnovi kaolina. Koeficient toplotnega raztezka se pove~uje z ve~anjem vsebnosti CAC v me{anici surovin. Klju~ne besede: kalcijev aluminatni cement, kaolin, porcelan

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A new porcelainised stoneware material based on anorthite

Cited by 59 publications

References 16 publications

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

The Effect of Surface Polishing on the Flexural Strength of Anorthite-based Porcelainised Stoneware

Non-traditional whiteware based on calcium aluminate cement

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