Title of article :
The Microstructure and Translucency Investigation of Cellulose Containing Low Temperature Fritted Soft-paste Porcelain
Author/Authors :
Mohammadzadeh Mianji, Mahnaz Student of Art University of Isfahan and Lecturer of Faculty of Arts - University of Al-Zahra - Tehran, Iran , Sarpoolaky, Hossein Faculty of Metallurgy and Materials Engineering - Iran University of Science & Technology - Tehran, Iran , Shafiei Sararoudi, Mehrnoush Faculty of Metallurgy and Materials Engineering - Iran University of Science & Technology - Tehran, Iran
Abstract :
Translucent porcelain with appropriate workability has been considered beneficial for light and shadow
to be used in the production of ceramic artworks. In addition, using low firing temperature encourages more
artists to use this body. The soft-paste cellulose composite porcelain is composed of similar amount of high
borax/calcia leadless frit and kaolin with 3% Vee gum T as a plasticizer. In order to increase workability and
green strength, five volume units of soft-paste porcelain (SP) slip was mixed with one volume unit bleached
bagasse pulp of sugar cane slip and then cellulose containing soft-paste porcelain (CSP) slip was made. The
samples were formed by hand, dried and then fired at the optimum temperature of 1120 °C for 5 hours. Results
showed that the SP sample became self-glazed after firing. Adding 20% paper pulp by 1.4 g/cm3 density in volume
to porcelain body slip (1.36 g cellulose fiber in 100 g SP) slightly increased transmission of light.
Microstructural analysis showed large amount of glass phase, which improved translucency of the bodies.
Moreover, mullite needle shaped crystals were formed with the reaction of clay and molten flux due to low melt
viscosity. XRD results clearly showed that the fired soft-paste porcelain contained quartz, mullite, anorthite and
albite in the fired state.
Keywords :
Cellulose , Translucency , Fritted porcelain , Soft porcelain
Journal title :
Iranian Journal of Materials Science and Engineering