Published March 20, 2009 | Version v1
Journal article Metadata-only

Structural evolution and thermophysical properties of (SmxGd1-x)2Zr2O7 (0 ≤ x ≤ 1.0) ceramics

Creators

  • 1. Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001 (China)

Description

Structural evolution and thermophysical properties of (SmxGd1-x)2Zr2O7 (0 ≤ x ≤ 1.0) were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-temperature dilatometer and laser flash diffusivity measurements from room temperature to 1400 deg. C. Pure Gd2Zr2O7 ceramics exhibit a defective fluorite-type structure, however, (SmxGd1-x)2Zr2O7 (0.1 ≤ x ≤ 1.0) ceramics are with a pyrochlore-type structure. The linear thermal expansion coefficients of (SmxGd1-x)2Zr2O7 ceramics increase with increasing test temperature. The thermal diffusivities of (SmxGd1-x)2Zr2O7 ceramics range from 0.390 to 0.770 mm2 s-1, while the thermal conductivities of (SmxGd1-x)2Zr2O7 ceramics are located within the range of 1.20 to 1.99 W m-1 K-1 from room temperature to 1400 deg. C

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jallcom.2008.04.042

Additional details

Identifiers

DOI
10.1016/j.jallcom.2008.04.042;
PII
S0925-8388(08)00677-4;

Publishing Information

Journal Title
Journal of Alloys and Compounds
Journal Volume
472
Journal Issue
1-2
Journal Page Range
p. 319-324
ISSN
0925-8388
CODEN
JALCEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40052975
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CALCINATION; CERAMICS; COPRECIPITATION; GADOLINIUM COMPOUNDS; PYROCHLORE; SAMARIUM COMPOUNDS; SCANNING ELECTRON MICROSCOPY; THERMAL CONDUCTIVITY; THERMAL EXPANSION; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZIRCONATES
Descriptors DEC
CHEMICAL REACTIONS; COHERENT SCATTERING; DECOMPOSITION; DIFFRACTION; ELECTRON MICROSCOPY; EXPANSION; MICROSCOPY; MINERALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRECIPITATION; PYROLYSIS; RARE EARTH COMPOUNDS; SCATTERING; SEPARATION PROCESSES; THERMOCHEMICAL PROCESSES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.