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Glass Formation in LaO 3/2 – TiO 2 Binary System by Containerless Processing
Author(s) -
Kaneko Masashi,
Yu Jianding,
Masuno Atsunobu,
Inoue Hiroyuki,
Vijaya Kumar M. S.,
Odawara Osamu,
Yoda Shinichi
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04981.x
Subject(s) - eutectic system , differential scanning calorimetry , phase diagram , materials science , glass transition , crystallization , melting point , thermal stability , analytical chemistry (journal) , phase (matter) , mineralogy , chemical engineering , thermodynamics , chemistry , chromatography , composite material , physics , microstructure , polymer , engineering , organic chemistry
Using containerless processing with an aerodynamic levitation furnace, LaO 3/2 – TiO 2 binary glasses were synthesized in bulk form. Glass‐forming region was found in the vicinity of eutectic point, which is approximately 29.5% LaO 3/2 and 70.5% TiO 2 in molar ratio. The glass transition temperature T g and the crystallization onset temperature T x of the obtained glasses were determined by differential scanning calorimetry. The thermal stability was evaluated by Δ T (= T x − T g ). Our experimental results were compared with phase diagram of the LaO 3/2 – TiO 2 binary system. Glass compositions with highest Δ T corresponded to single‐phase compound of La 4 Ti 9 O 24 and the eutectic point.