Properties of glasses with high water content. Final report, June 14, 1979-September 14, 1983

Technical Report · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6255568

Tomozawa, M; Watson, E B

Sodium silicate glasses containing 0 to 25 wt % dissolved water were synthesized and their chemical and physical properties were investigated. There are two types of water in these glasses: one type is hydroxyl SiOH, and the other is molecular water, H/sub 2/O. Dc conductivity at a constant temperature goes through a pronounced minimum as water content increases. The sodium diffusion coefficient follows approximately the dc conductivity. The correlation factor (Haven ratio) increases with increasing water content. The high-frequency dielectric constant increases slightly, while both the low-frequency dielectric constant and the dielectric relaxation strength pass through a pronounced minimum as water content increases. The refractive index goes through a maximum while density and hardness decrease with increasing water content and chemical durability deteriorates with increasing water content. The diffusion coefficient of H/sub 2/O in glass increases with added water. Radiation coloration by ..gamma..-rays and x-rays is suppressed by water in glass. The glass transition temperature decreases, while the thermal expansion coefficient increases with increasing water content.

• Research Organization: Rensselaer Polytechnic Inst., Troy, NY (USA)
• DOE Contract Number: AC02-79ER10453
• OSTI ID: 6255568
• Report Number(s): DOE/ER/10453-04; ON: DE85005404
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALKALI METAL COMPOUNDS
COLOR
DIFFUSION
ELECTRICAL PROPERTIES
EXPANSION
GLASS
HYDROGEN COMPOUNDS
MOISTURE
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATION EFFECTS
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SODIUM SILICATES
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WATER