Chemical Durability Improvement and Static Fatigue of Glasses.
Abstract
Series of investigaions were made on the relation between the surface conditions of high silica glass and its mechanical strength. It was found that, (1) Heavy alkaline-earth elements such as Sr Ba in alkaline solutions tend to deposit on the silica glass surface and produce severe surface cracks, reducing the mechanical strength. (2) Surface energy of the glass appears to determine the mechanical strength of high silica glass. (3) Dissolution rate of high silica glass in water increases with increasing hydrostatic pressure. This appears inconsistent with the stress-corrosion theory. (4) Crack blunting of high silica glass involves dissolution and precipitation process. (5) Surface condition of high silica glass influences the stress-rate dependence of the mechanical strength. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1982
- Accession Number
- ADA115318
Entities
People
- Minoru Tomozawa
Organizations
- Rensselaer Polytechnic Institute