April 7, 2000
Conference Paper

The Effects of Oxygen Partial Pressure on Liquidus Temperature of a High-Level Waste Glass with Spinel as the Primary Phase

Abstract

The redox state of iron affects spinal crystallization in vitrified high-level waste (HLW) glass. Simulated HLW glass with spinel as the primary crystalline phase field was heat treated at constant temperatures within the interval from 850 C to 1300 C under varying atmospheres with oxygen partial pressure, Po2, ranging from 1x10-16 kPa (pure CO) to 101 kPa (pure O2). Liquidus temperature (TL) of glass increased with decreasing Po2 up to Po2 > 3 x 10-9 kPa. At Po2

Revised: March 20, 2009 | Published: April 7, 2000

Citation

Izak P., P.R. Hrma, B.K. Wilson, and J.D. Vienna. 2000. The Effects of Oxygen Partial Pressure on Liquidus Temperature of a High-Level Waste Glass with Spinel as the Primary Phase. In Environmental issues and waste management technologies in the ceramic and nuclear industries VI : proceedings of the Waste Management Science and Technology in the Ceramic and Nuclear Industries and Science and Technology in Addressing Environmental Issues in the Ceramic Industry symposia: Ceramic Transactions, edited by DR Spearing, GL Smith and RL Putnam, 119, 309-316. Westerville, Ohio:American Ceramic Society. PNNL-SA-32973.