The influence of zircon on the mechanical properties and thermal shock behaviour of slip-cast alumina-mullite refractories

Aksel C.

MATERIALS LETTERS, vol.57, no.4, pp.992-997, 2002 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 4
  • Publication Date: 2002
  • Doi Number: 10.1016/s0167-577x(02)00912-6
  • Journal Name: MATERIALS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.992-997
  • Keywords: alumina, mullite, zircon, slip casting, refractory, mechanical properties, thermal shock, COMPOSITES, CERAMICS
  • Anadolu University Affiliated: No

Abstract

Mechanical properties of slip-cast alumina-mullite (AM) refractories were improved significantly by the addition of similar to 2-mu-m zircon (ZrSiO4) particles. Fracture behaviour showed mainly transgranular, with some intergranular, fracture. R parameter showed that there was a marked incline in resistance to fracture initiation. Thermal shock tests confirmed that the retained strength and Young's modulus of alumina-mullite-zircon refractories were improved by increasing the quench temperature, indicating higher resistance to crack propagation. (C) 2002 Elsevier Science B.V. All rights reserved.