Pyroplastic deformation behavior of vitreous porcelain bodies in presence of spodumene

HOPA D. Y., ÖZEL E.

JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY, vol.53, no.2, pp.545-551, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1007/s41779-017-0066-2
  • Journal Name: JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.545-551
  • Keywords: Porcelain, Spodumene, Microstructure, Pyroplastic deformation, Sintering, STONEWARE TILES, SANITARYWARE
  • Anadolu University Affiliated: Yes

Abstract

Pyroplastic deformation tendency of vitreous body compositions is a major production problem. In this work, a vitreous sanitaryware body composition (ST) which was developed in a previous work was taken as standard, and the sodium feldspar content of this recipe was changed with spodumene as a source of Li2O. Six different compositions were formulated by applying two different approaches: weight percent formulation and Seger formulation. Bodies were fired at 1250 degrees C and after firing deformation, firing shrinkage, and water absorption values were measured. Pyroplastic deformation behavior of bodies was determined by using fleximeter with a peak temperature of 1250 degrees C. According to the results, it was observed that spodumene addition with Seger formulation gives better results than weight percent formulation. The body which contains 0.1 mol% of Li2O (L2 body) has deformation value which is 11% lower than that of standard body due to its different phase composition and microstructure than ST body.