Low Thermal Conductivity Ceramics for Thermal Barrier Coatings

Abstract:

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This paper summarizes the basic properties of a series of rare-earth zirconate ceramics (Gd2Zr2O7, Sm2Zr2O7, Dy2Zr2O7, Er2Zr2O7 and Yb2Zr2O7). The phases and microstructures were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Thermal properties of these materials were determined. The results indicated that Sm2Zr2O7 rare-earth zirconate ceramics have the lower thermal conductivity and the highest thermal expansion coefficient than other rare-earth zirconate ceramics. The dielectric constant decreases with the increase of atomic number.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1764-1766

DOI:

10.4028/www.scientific.net/KEM.336-338.1764

Citation:

Y. X. Qin et al., "Low Thermal Conductivity Ceramics for Thermal Barrier Coatings", Key Engineering Materials, Vols. 336-338, pp. 1764-1766, 2007

Online since:

April 2007

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Price:

$35.00

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