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How do you protect glass from degrading over millions of years so that it can play a critical role in the long-term storage of nuclear waste? To answer that question, scientists at PNNL are studying glasses that can precipitate a self-protecting layer on the glass surface. Early research focused on precipitating certain phases that would be stable over long periods of time. The samples studied have been designed to work with various environments, and research indicates that the glasses exhibit vastly different corrosion properties depending on the solution environment. This image is an optical micrograph of one of the glass samples. It is possible to see three distinct layers—light brown, tan and cream—forming on the glass surface, which is shown in the upper left corner in brown. Imagery provided by Dan Skorski, Joe Ryan, David Pierce and Dong-Sang Kim.

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Document Title: Rapidly Dissolving Glass Study
Category: Environmental Remediation, Materials Science, Nuclear Research and Facilities
Media Type: Photos
Date of Image/Photo: October 2011
Background:
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/DRAE-8MJS8S

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