Tuesday, June 22, 2021, at 3 p.m. (Eastern US Time)
Hosted by the Glass & Optical Materials Division, this webinar will feature a presentation from Dr. Joseph Ryan (Pacific Northwest National Laboratory) that will examine the state-of-the-art of glass corrosion science. Beginning with a discussion of the current models and their shortcomings, the talk will focus on the coordinated research performed by international community to develop the science further. Special attention will be given into key experiment designs and novel characterization types. Results from the common composition known as the International Simple Glass will be specifically discussed, especially as they apply to calculations capable of being inserted into performance assessment models. In particular, the key mechanisms will be described along with their appropriate mathematical constructs and the most advanced parameterization to date, with an emphasis on the level of confidence and consensus. The presentation will end with a summary of the new level of understanding of glass corrosion mechanisms that has resulted from the concerted effort of the international community.
Dr. Ryan is a senior materials scientist with the Radiological Materials Group at Pacific Northwest National Laboratory specializing in the study of the structure and properties of glass and ceramic materials, with a focus on surface-related techniques and effects. He is currently using this approach to develop a mechanistic understanding of the long-term corrosion of nuclear waste forms. He is the lead US scientist for a six-nation collaborative group seeking a technical consensus on the glass corrosion rate. Dr. Ryan is also involved in the development of novel alternative waste forms for the sequestration of problem radionuclides using a variety of processing techniques, including bulk ceramic processing and traditional glass melting, as well as sol-gel, non-oxide, and other specialty glass synthesis techniques. He is leading two efforts to establish links between microstructure and strength for lithium aluminate ceramic pellets. He has also been involved in the design, synthesis and characterization of thin film materials for use in optoelectronic, infrared, tribological, and barrier applications. He is an active member of the American Ceramic Society, currently serving as the Vice-Chair for the Glass and Optical Materials Division.
ACerS member: no cost
ACerS GGRN and Material Advantage student member: no cost
Non-member student: $15
If you have any questions, please contact Erica Zimmerman.
This webinar is brought to you by ACerS Glass & Optical Materials Division.