Elastic properties and molar volume of rare-earth aluminosilicae glasses

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1992.tb07833.x· OSTI ID:5131799

Tanabe, S; Hirao, K; Soga, N ^[1]

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1. Dept. of Industrial Chemistry, Faculty of Engineering, Kyoto Univ., Kyoto 606-01 (JP)

This paper reports on the elastic properties, molar volume, and glass transition temperature (T{sub g}) of rare-earth-containing aluminosilicate glasses that were investigated in the compositions of SiO{sub 2}--LnAlO{sub 3} and SiO{sub 2}--Ln{sub 3/4}Al{sub 5/4}O{sub 3}, where Ln is Y, La, Nd, Eu, or Yb. The molar volume decreased with decreased ionic size of the Ln{sup 3+} ion, and T{sub g} and elastic moduli increased in the same order. The Yb-containing glasses showed the highest Young's modulus among all the oxide glasses, even higher than the highest value ever known fro glass containing Y{sub 2}O{sub 3}, as expected from the smaller ionic radius of Yb{sup 3+} than that of Y{sup 3+}. The bulk modulus was found to be almost proportional to the inverse four-thirds power of the molar volume of glasses in each composition, indicating that Ln{sup 3+} ions can substitute for each other without changing the glass structure except for the size of the local structure around themselves. From the comparison of these properties, the structural role of rate-earth ions in these glasses is discussed.

• OSTI ID: 5131799
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 75:3; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
ELASTICITY
EUROPIUM ADDITIONS
EUROPIUM ALLOYS
GLASS
LANTHANUM ADDITIONS
LANTHANUM ALLOYS
MECHANICAL PROPERTIES
NEODYMIUM ADDITIONS
NEODYMIUM ALLOYS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
SILICATES
SILICON COMPOUNDS
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
YOUNG MODULUS
YTTERBIUM ADDITIONS
YTTERBIUM ALLOYS
YTTRIUM ADDITIONS
YTTRIUM ALLOYS