Title

Surface Segregation of Calcium in Dense Alumina Exposed to Steam and Steam-CO

Abstract

The effects of steam, high pressures and high temperatures on disintegration of dense alumina rods, accompanied with a loss of strength. Auger electron spectroscopy (AES) combined with Ar ion sputtering was used to study the variation in elemental composition of external and fracture surfaces of dense alumina rods exposed to steam and steam-CO at 385 to 1015 psia. Calcium segregated to both kinds of surface. A direct correlation was found between this segregation and the modulus of rupture.

Department(s)

Physics

Second Department

Materials Science and Engineering

Keywords and Phrases

Refractory Materials - Disintegration; Alumina

International Standard Serial Number (ISSN)

27812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1978 American Ceramic Society, All rights reserved.

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