Lanthanum titanate (La2Ti2O7) as an interphase material in alumina (Al2O3) based composites

Ceylan A., Fuierer P.

EURO CERAMICS VIII, PTS 1-3, vol.264-268, pp.829-832, 2004 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 264-268
  • Publication Date: 2004
  • Doi Number: 10.4028/www.scientific.net/kem.264-268.829
  • Journal Name: EURO CERAMICS VIII, PTS 1-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.829-832
  • Keywords: alumina, aluminum titanate, lanthanum titanate, laminate composites
  • Anadolu University Affiliated: No

Abstract

The aim of this research is to fabricate and characterize alumina (Al2O3) / lanthanum titanate (La2Ti2O7) laminate ceramic composites. The interfacial bond between oxide laminates has a critical effect on the final mechanical properties (ie. fracture toughness) of composites. Hot forged Al2O3 and La2Ti2O7 laminated composites were prepared and then characterized by X-ray diffraction (XRD), optical microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy (EDS) and wavelength dispersive X-ray spectroscopy (WDS). An intermediate phase was found to form at the interface was identified as Al2O5.