Differences in densification behaviour of K- and Na-feldspar-containing porcelain bodies

Das, Swapan Kumar; Dana, Kausik

doi:10.1016/s0040-6031(03)00257-0

Cited by 89 publications

(57 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This may be attributed to low percentage of kaolin which was responsible for the formation of unstable aluminosilicate spinel phase. It is the unstable aluminosilicate spinel phase which forms mullite phase and mullite forms the liquid phase [27][28][29][30]. The liquid phase is responsible for blocking the open porosity, increase the density and decrease water absorption.…”

Section: Physico-mechanical Properties Of the Porcelain Tilesmentioning

confidence: 99%

Suitability of Tanzanian Kaolin, Quartz and Feldspar as Raw Materials for the Production of Porcelain Tiles

Kimambo¹

2014

IJSTS

View full text Add to dashboard Cite

Kaolin and quartz from Pugu; and feldspar from Morogoro were investigated to determine their suitability as raw materials for the production of porcelain tiles. From the mineralogical analysis, kaolin sample was found to contain kaolinite (Al 2 Si 2 O 5 (OH) 4 ) and quartz (SiO 2 ); quartz sample was found to contain only quartz mineral silica (SiO 2 ); and feldspar sample was found to contain albite (NaAlSi 3 O 8 ) and microcline (KAlSi 3 O 8 ). The major chemical compounds found in kaolin and feldspar were SiO 2 and Al 2 O 3 , and quartz sample was found to contain SiO 2 and SO 3 . The tiles made from the raw materials and fired between 900 °C and 1200 °C were found to have the water absorption of 12.4 -13.7%, bulk density of 1.89-1.95 g/cm 3 , apparent porosity of 24.1-26.0%, linear shrinkage of 0.0-1.7%, compressive strength of 107.4-380.4 kg/cm 2 and loss on ignition of 3.6-6.0%. Among the studied compositions and firing temperatures, tiles made from a blend containing 40% kaolin, 45% feldspar and 15% quartz; and fired at 1100 °C were found to have the best properties for the production of porcelain tiles. This is an indication that the Tanzanian kaolin, quartz and feldspar are suitable raw materials for the production of porcelain tiles.

show abstract

Section: Physico-mechanical Properties Of the Porcelain Tilesmentioning

confidence: 99%

Suitability of Tanzanian Kaolin, Quartz and Feldspar as Raw Materials for the Production of Porcelain Tiles

Kimambo¹

2014

IJSTS

View full text Add to dashboard Cite

show abstract

“…Feldspar rocks are usually used as a source of alkali oxides (Na 2 O, K 2 O) and alumina (Al 2 O 3 ) for the preparation of glazes [5]. Suitable choice of feldspar rock can signiicantly afect the properties of the ceramic body [6], iring temperature and soaking time [10]. The densiication of green body, cleanability and the stain resistance of polished sintered ceramic tiles is inluenced by particle size distribution of used feldspar rocks [7].…”

Section: Introductionmentioning

confidence: 99%

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Sokolar¹

2018

Sintering of Functional Materials

View full text Add to dashboard Cite

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.

show abstract

“…The DTA result in Fig. 3(b) indicated that the glazed sample shows an obvious endothermic peak in the temperature range of 1020-1200 ℃, which was attributed to the melting of feldspar, such as K 2 O·Al 2 O 3 ·6SiO 2 → K 2 O·Al 2 O 3 ·4SiO 2 +2SiO 2 [20,21]. In general, the decomposition temperature of potassium feldspar, sodium feldspar, and calcium feldspar was 1130-1150 ℃, 1150-1250 ℃, and 1230-1250 ℃, respectively [22].…”

Section: Effect On Mechanical Propertiesmentioning

confidence: 99%

Improvement of mechanical properties, microscopic structures, and antibacterial activity by Ag/ZnO nanocomposite powder for glaze-decorated ceramic

Zhang

Guo

2017

J Adv Ceram

View full text Add to dashboard Cite

Abstract:With the increase in the international trade of ceramics, improvement in the physical and chemical properties of ceramics has become a market demand in recent years. The addition of nanomaterials in glaze can simultaneously improve the mechanical and corrosion resistance properties of ceramics. In this study, the effect of nano-sized Ag/ZnO in glazed ceramic was investigated considering the hardness, whiteness, and microscopic structures of the products. Results showed that the Ag/ZnO nanocomposite powder significantly affects the performance of glaze. Glaze hardness reached the highest value (96.6 HV) at the low sintering temperature of 1130 ℃ with the addition of 10% Ag/ZnO nanocomposite powder. Furthermore, the Ag/ZnO nanocomposite powder improved crack resistance and whiteness. Ag as AgO and Ag 2 O in the glaze was effective for antibacterial activity of ceramic. In addition, the Ag/ZnO nanocomposite powder could also promote the shrinkage of bubbles in the glaze layer and smooth the glaze. These results indicated that the nanoparticles could act as an active center for melting raw materials, which is crucial for ceramic properties.

show abstract

Differences in densification behaviour of K- and Na-feldspar-containing porcelain bodies

Cited by 89 publications

References 13 publications

Suitability of Tanzanian Kaolin, Quartz and Feldspar as Raw Materials for the Production of Porcelain Tiles

Suitability of Tanzanian Kaolin, Quartz and Feldspar as Raw Materials for the Production of Porcelain Tiles

Sintering of Whiteware Body Depending on Different Fluxing Agents and Binders

Improvement of mechanical properties, microscopic structures, and antibacterial activity by Ag/ZnO nanocomposite powder for glaze-decorated ceramic

Contact Info

Product

Resources

About