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Title: Investigation of chemical-durability mechanism in fluoride glasses. Annual report No. 2, report 1 July 1984-30 June 1985

Abstract

In previous research, leaching data on two families of fluoride glasses were collected in aqueous media and in solutions buffered at various pH values. The corrosion process was analyzed, leading to the development of a model for dissolution. In this 2nd year of research, the dissolution model was broken down into component mechanisms and each component analyzed separately. While many processes take part in the aqueous corrosion of fluoride glasses, the authors have identified the results of these processes and have developed a quantitative description of each part and of what role it plays in the dissolution of zirconium-fluoride based glasses. They are currently applying this analysis method to thorium-fluoride glasses and are preparing a publication on those results. The comparison between the leach rates of different classes of fluoride glasses (ZrLF4, ThF4 and UF4) has been of great value in understanding the effect of composition variations on the leaching processes. Monitoring the pH variations and conducting tests in pH buffered solutions have led us to understanding the effects that enhance the corrosion rate of these glasses and make them far less durable than silicates.

Authors:
;
Publication Date:
Research Org.:
Florida Univ., Gainesville (USA). Dept. of Materials Science and Engineering
OSTI Identifier:
5954358
Report Number(s):
AD-A-162740/5/XAB
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; GLASS; CORROSION; THORIUM FLUORIDES; URANIUM FLUORIDES; ZIRCONIUM FLUORIDES; FLUORIDES; LEACHING; LIQUIDS; SILICATES; STABILITY; ACTINIDE COMPOUNDS; CHEMICAL REACTIONS; DISSOLUTION; FLUIDS; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SILICON COMPOUNDS; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; URANIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; 360205* - Ceramics, Cermets, & Refractories- Corrosion & Erosion

Citation Formats

Simmons, C J, and Simmons, J H. Investigation of chemical-durability mechanism in fluoride glasses. Annual report No. 2, report 1 July 1984-30 June 1985. United States: N. p., 1985. Web.
Simmons, C J, & Simmons, J H. Investigation of chemical-durability mechanism in fluoride glasses. Annual report No. 2, report 1 July 1984-30 June 1985. United States.
Simmons, C J, and Simmons, J H. 1985. "Investigation of chemical-durability mechanism in fluoride glasses. Annual report No. 2, report 1 July 1984-30 June 1985". United States.
@article{osti_5954358,
title = {Investigation of chemical-durability mechanism in fluoride glasses. Annual report No. 2, report 1 July 1984-30 June 1985},
author = {Simmons, C J and Simmons, J H},
abstractNote = {In previous research, leaching data on two families of fluoride glasses were collected in aqueous media and in solutions buffered at various pH values. The corrosion process was analyzed, leading to the development of a model for dissolution. In this 2nd year of research, the dissolution model was broken down into component mechanisms and each component analyzed separately. While many processes take part in the aqueous corrosion of fluoride glasses, the authors have identified the results of these processes and have developed a quantitative description of each part and of what role it plays in the dissolution of zirconium-fluoride based glasses. They are currently applying this analysis method to thorium-fluoride glasses and are preparing a publication on those results. The comparison between the leach rates of different classes of fluoride glasses (ZrLF4, ThF4 and UF4) has been of great value in understanding the effect of composition variations on the leaching processes. Monitoring the pH variations and conducting tests in pH buffered solutions have led us to understanding the effects that enhance the corrosion rate of these glasses and make them far less durable than silicates.},
doi = {},
url = {https://www.osti.gov/biblio/5954358}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 01 00:00:00 EST 1985},
month = {Sun Dec 01 00:00:00 EST 1985}
}

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