Title

Properties of Refractories after Exposure to High Pressure Gases III

Alternative Title

Effect of percent saturation

Abstract

The dimensional stability, density, porosity and flexural strength of several cement and phosphatebonded refractories were determined before and after exposure to steam and CO containing atmospheres at ∼0, 13.5, 30.5, 32.5, 85 and 100 pct saturation. The flexural strength and compounds present in a neat, high alumina cement were also determined as a function of the percent saturation of pure steam and steam/CO atmospheres. Chemical reactions occurring in the refractories and the neat cement were determined by XRD, DTA/TGA and SEM and correlated with the above properties. The flexural strength of the cementbonded castables and the hydrated neat cement increased significantly with increasing saturation due to the formation of new compounds, primarily boehmite. A minimum saturation of ∼70 pct was needed to realize the full increase in flexural strength. Phosphatebonded refractories became weaker after exposure to saturated atmospheres.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Characterization and Evaluation of Materials

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1980 Springer Verlag, All rights reserved.

Share

 
COinS