Title

Surface chemical reactions of aluminosilicate composites at extreme atmospheres using electron spectroscopy for chemical analysis

Authors

Authors

S. Wannaparhun;S. Seal

Comments

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Abbreviated Journal Title

J. Mater. Chem.

Keywords

WATER; Chemistry, Physical; Materials Science, Multidisciplinary

Abstract

Aluminosilicates are important materials and are mostly applied to high temperature structural engineering. However, they are susceptible to degradation in aggressive and extreme atmospheres. The chemical degradation and subsequent failure of aluminosilicates can be severe in both reducing atmospheres and high temperatures in the presence of water vapor. The potential use of electron spectroscopy for chemical analysis to monitor such effects on aluminosilicate composites in a simulated land-based gas turbine environment is presented in this study. The chemical changes caused by the environment can be observed as systematic binding energy shifts in the O(1s) spectrum as a function of varying Si/Al ratio. The chemical changes are further correlated to thermodynamic calculations at selected temperatures and partial pressures.

Journal Title

Journal of Materials Chemistry

Volume

13

Issue/Number

2

Publication Date

1-1-2003

Document Type

Article

Language

English

First Page

323

Last Page

327

WOS Identifier

WOS:000180805300031

ISSN

0959-9428

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