Paper Titles
Precipitation Behavior of MN(M=V,Nb) Phase in the 7Cr-1.5Mo Ferritic Heat Resistant Steels
p.1093
Dislocations in Phase-Change Ge2Sb2Te5 Alloy
p.1097
Explosion Bulge Test of High Srength Low Alloy Steel PFS-700 in Air and Underwater
p.1101
Pb(Zr0.95Ti0.05)O3 Powders Synthesized by PEG Modified Pechini Method: Characterization and Sintering Behavior
p.1105
Nanostructural Characterization of Hydrothermally Stable γ-Alumina-Based Composite Materials by Transmission Electron Microscopy
p.1109
Adhesion Promoter and Anti-Sticking Layer Effects on Adhesion Properties Using Symmetric AFM Probe
p.1113
A Study of Mechanical Behavior of Au Films by Visual Image Tracing System
p.1117
Effect of Cyclic Strain Rate on Environmental Fatigue Behaviors of SA508 Gr.1a Low Alloy Steel in 310°C Deoxygenated Water
p.1121
Effect of Processing Conditions of Dolomite on the Antiviral Activity
p.1125

Nanostructural Characterization of Hydrothermally Stable γ-Alumina-Based Composite Materials by Transmission Electron Microscopy

Article Preview

Abstract:

La2O3 and/or Ga2O3 doped, and the double dopant γ-Al2O3 composite powder samples were prepared by the sol-gel method. Nanostructural characterizations of the powder samples were performed by high resolution transmission electron microscopy (HRTEM) in order to clarify the role of the metal oxide dopants for the improved hydrothermal stability of the La2O3-doped Ga2O3-Al2O3 composite material. The results of HRTEM study and selected area electron diffraction (SAED) analysis revealed the formation of the uniform solid solution of Ga2O3-Al2O3. In addition, the results of X-ray elemental mapping analysis revealed the existence of well-dispersed La2O3 on the grain surface of Ga2O3-Al2O3 solid solution. These structural features could act an important role for the improved hydrothermal stability of the La2O3-doped Ga2O3-Al2O3 composite material.

You might also be interested in these eBooks
Advanced Materials and Processing View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Pages:

1109-1112

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.26-28.1109

Citation:

Cite this paper

Online since:

October 2007

Authors:

Shinji Fujisaki, Md. Hasan Zahir, Yumi H. Ikuhara, Yuji Iwamoto, Kotaro Kuroda

Keywords:

Misoporous y-Alumina, Sol-Gel Method, TEM

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. B. Peri: J. Phys. Chem. Vol. 70 (1966), p.3168.

Google Scholar

[2] M. F. L. Johnson: J. Catal. Vol . 123 (1990), p.245.

Google Scholar

[3] J. Čejka: Appl. Catal. A: General Vol. 254 (2003), p.327.

Google Scholar

[4] B. N. Nair, T. Yamaguchi, T. Okubo, H. Suematsu, K. Keizer and S-I. Nakao: J. Membr. Sci. Vol. 135 (1997), p.237.

Google Scholar

[5] B. N. Nair, T. Okubo and S-I. Nakao: Membrane Vol. 25.

Google Scholar

[2] (2000), p.73.

Google Scholar

[6] R. M. de Vos and H. Verweij: Science Vol. 279 (1998), p.1710.

Google Scholar

[7] Y. S. Lin, K. J. Vries and A. J. Burggraaf: J. Mater. Sci. Vol. 26.

Google Scholar

[3] (1991), p.715.

Google Scholar

[8] H. Schaper, E. B. M. Doesburg and L. L. Van Reijen: Appl. Catal. Vol. 7 (1983), p.211.

Google Scholar

[9] B. Beguin, E. Garbowski and M. Primet: Appl. Catal. Vol. 75 (1991), p.119.

Google Scholar

[10] Md. Hasan Zahir, Koji Sato and Yuji Iwamoto: J. Membr. Sci. Vol. 247 (2005), p.95.

Google Scholar

[11] Md. Hasan Zahir, Koji Sato, Hiroshi Mori and Yuji Iwamoto: J. Am. Ceram. Soc. Vol. 89.

Google Scholar

[9] (2006), p.2874.

Google Scholar

[12] M. Haneda, Y. Kintaichi, T. Mizushima, N. Kakuta and H. Hamada: Appl. Catal. B: Environmental Vol. 31 (2001), p.81.

Google Scholar

[13] M. Haneda, Y. Kintaichi, H. Shimada and H. Hamada: J. Catal. Vol. 192 (2000), p.137.

Google Scholar