Impact of Phase Separation on Waste Glass Durability

PDF Version Also Available for Download.

Description

Phase separation in nuclear waste glasses has an adverse effect on glass durability. Phase separation in glasses generally takes the form of two immiscible glass phases which differ in chemical composition, density, and surface tension. Usually one phase is more soluble than the other. Phase separation complicates modeling of glass durability as a function of composition because the composition of the overall glass is known but the compositions of the two immiscible phases is not known: the performance of the overall glass is unpredictable and the long term durability of the glass can not be modeled. A discriminate analysis of ... continued below

Physical Description

vp.

Creation Information

Jantzen, C.M. November 29, 1999.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

Phase separation in nuclear waste glasses has an adverse effect on glass durability. Phase separation in glasses generally takes the form of two immiscible glass phases which differ in chemical composition, density, and surface tension. Usually one phase is more soluble than the other. Phase separation complicates modeling of glass durability as a function of composition because the composition of the overall glass is known but the compositions of the two immiscible phases is not known: the performance of the overall glass is unpredictable and the long term durability of the glass can not be modeled. A discriminate analysis of 110 homogeneous and phase separated waste glasses allowed a ''phase separation discriminate function'' to be defined. The discriminate function is calculated based on glass oxide wt percent and compositionally differentiates between immiscible phases of different density. The discriminate function is defined in 14 component composition space although greater than 95 percent of the glass chemistry is dominated by seven major components (Na2O- K2O-Li2O-SiO2-Al2O3-B2O3-Fe2O3). The compositionally dependent discriminator function is used to eliminate phase separated glasses from being processed in the Savannah River Site (SRS) Defense Waste Processing Facility (DWPF). All glasses produced are homogeneous and thus have predictable long term durability.

Physical Description

vp.

Source

  • American Ceramic Society, Indianapolis, IN (US), 05/01/1999--05/04/1999

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: WSRC-MS-99-00333, Rev. 1
  • Grant Number: AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 15031
  • Archival Resource Key: ark:/67531/metadc621963

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • November 29, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

Description Last Updated

  • May 5, 2016, 4:19 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 9

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Jantzen, C.M. Impact of Phase Separation on Waste Glass Durability, article, November 29, 1999; South Carolina. (digital.library.unt.edu/ark:/67531/metadc621963/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.