|About this Abstract
||Materials Science & Technology 2017
||Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
||Microwave Joining Process of an Aluminosilicate Ceramic Material for Radioactive Waste Containers
||Greg Kalfayan, Dominique Goeuriot, Sébastien Saunier, Christophe Meunier, Nathalie Texier-Mandoki
|On-Site Speaker (Planned)
As part of the long-term nuclear waste repository project (Cigeo project), the French radioactive waste management agency Andra has been studying for several years ceramic containers for high-level radioactive waste, which are alternative solutions to low carbon steel. The issue is to develop sealing process between the lid and the body of aluminosilicate ceramic containers. Joining by microwave heating was chosen because it allows a local and moderate heating. Previous studies determined three potential sealing glasses taking into account some constraints: coefficient of thermal expansion close to that of the ceramic, low melting point (≤ 800°C), resistance to lixiviation. The interaction between ceramic or sealing glasses and microwave is studied. The addition of microwave-absorbing materials into sealing glass is also explored. Microwave joining of the ceramic materials are then realized. In each case, the interface microstructures are examined, and relations between the microstructures and mechanical properties are determined.