Effect of TiO2 doping on microstructural properties of Al2O3-based single crystal ceramics
JOURNAL OF CERAMIC PROCESSING RESEARCH, cilt.12, sa.1, ss.21-25, 2011 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 12 Sayı: 1
- Basım Tarihi: 2011
- Dergi Adı: JOURNAL OF CERAMIC PROCESSING RESEARCH
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.21-25
- Anahtar Kelimeler: Alumina, Alumina-tialite, Single crystal, Microstructure, MECHANICAL-PROPERTIES, AL2O3-AL2TIO5 SYSTEM, EUTECTIC COMPOSITE, ALUMINA, SOLIDIFICATION, RESISTANCE, STRENGTH
- Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet
Özet
Powders of Al2O3-TiO2 containing, 48 and 40% TiO2 by weight were formed into single crystals with a Verneuil furnace at 2088 K. Raman spectroscopy was used to determine the phase composition of the samples solidified from the Al2O3-TiO2 powder. The resulting beta-Al2TiO5-Al6Ti2O13, beta-Al2TiO5-Al2O3 single crystals were probed with micro hardness assays, scratch test analyses, atomic force microscopy (AFM), scanning electron microscopy (SEM), thermal expansion and four-point bending tests. It was observed that the alumina-tialite single crystal retained a composition of Al2O3-TiO2 containing 60% Al2O3 by weight and displayed optimum properties.