Hot Gas Corrosion of Silicon Based Ceramics.
Abstract
The hot gas corrosion of Silicon carbide (SiC) and Silica (SiO2) has been studied in a preliminary way, using two instruments constructed at the Ohio State University for this purpose. The two ceramics are not corroded by atmospheres containing 10% HCl in argon at temperatures up to 1150 C. However noticeable attack occurs in hydrogen at 1300 C when the water vapor pressure is below -5 atm. Most of the work on the project has concentrated on the construction and debugging of a high temperature, high pressure mass spectrometer sampling device to be used for quantitative studies of the chemistry and thermodynamics of corrosion reactions. A high temperature thermogravimetric system has also been constructed to study the kinetics of the hot gas corrosion reactions. Theoretical calculations of the chemical equilibria, to be expected in a number of corrosion reactions, have been carried out and are included in the report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 13, 1985
- Accession Number
- ADA163810
Entities
People
- Dennis W. Readey
- Eric R. Kreidler
Organizations
- Ohio State University