Paper Title:
Low Thermal Conductivity Ceramics for Thermal Barrier Coatings
  Abstract

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, J. D. Wang, W. Pan, C. L. Wan, Z. X. Qu, "Low Thermal Conductivity Ceramics for Thermal Barrier Coatings", Key Engineering Materials, Vols. 336-338, pp. 1764-1766, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jing Pei, Zhen Xing Yue, Fei Zhao, Zhi Lun Gui, Long Tu Li
Abstract:The nano-sized Ba(Zr0.2Ti0.8)O3 powder was prepared by citrate sol-gel method. The crystal structure and the particle size of the powder...
76
Authors: Long Tu Li, Tian Wang, Xiao Hui Wang, Jing Chang Zhao, Xian Li
Abstract:Dielectric characteristics of strontium titanate based ceramics doped with samarium were investigated within temperature range from –60oC to...
158
Authors: Hua Zhang Zhai, Hong Nian Cai, Xiao Zhan Yang, Jian Bao Li, Gang Feng Guo, Chuan Bao Cao
Abstract:A series of BN-SiO2 composite ceramics with high relative densities have been fabricated by hot pressing of a mixture of hexagonal boron...
1426
Authors: Rong Xia Huang, Yu Zhen Zhao, Yong Jie Zhao, Rong Zheng Liu, He Ping Zhou
Abstract:Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by...
315
Authors: Yi Hang Fang, Kai Miao, Si Qiao Feng, Jia Meng Cao, Huan Ping Wang, Shi Qing Xu
Chapter 7: New Materials and its Applications
Abstract:The 0.95MgTiO3-0.05CaTiO3 (95MCT) powders and ceramics were prepared by a sol-gel method by using...
923