Synthesis and sintering of cordierite at low temperature from kaolin and magnesium hydroxide

Kurama S., Ozel E., Ay N.

EURO CERAMICS VIII, PTS 1-3, vol.264-268, pp.925-928, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 264-268
  • Publication Date: 2004
  • Doi Number: 10.4028/www.scientific.net/kem.264-268.925
  • Journal Name: EURO CERAMICS VIII, PTS 1-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.925-928
  • Keywords: sintering, cordierite, kaolin, magnesium hydroxide, low temperature, GLASS-CERAMICS, MGO-AL2O3-SIO2
  • Anadolu University Affiliated: No

Abstract

Thermal reactions of ultrafine Mg(OH)(2) mixtures of ultrafine particles and kaolin mixtures were investigated to obtain cordierite at low temperatures. Magnesium hydroxide was precipitated from magnesium chloride (MgCl2) solution. Kaolin with three different chemical composition (K-l, K-S and K-K) was mixed with Mg(OH)(2) to form cordierite at different temperatures (900-1200degreesC). Mole ratio of mixtures were MgO:Al2O3:2SiO(2). To obtain dense cordierite, boron oxide in different quantities (in the form of magnesium borate 2MgO(.)B(2)O(3)) were added into mixtures of kaolin and Mg(OH)(2). After sintering, it was observed that, by increasing the amount of B2O3 in the mixture, the density was not changed significantly.