Abstract
Beryllium pebbles are planned to be used as a neutron multiplier in the Helium-cooled ceramic breeder (HCCB) tritium breeding blanket module (TBM) of ITER, which is also the primary option of the Chinese TBM program. Advanced neutron multipliers such as Be12Ti beryllide with high stability at elevated temperature are desired for demonstration power plant (DEMO) reactors. Prototypic pebbles 1 mm in diameter of single phase Be and 0.7 mm in diameter of binary Be12Ti beryllide were successfully fabricated by a combination method involving hot isostatic pressing and rotating electrode process. Surface microstructure of Be and Be12Ti pebbles were analyzed by using AFM and SEM. Compression properties of Be and Be12Ti pebbles were evaluated by mechanical compression. Beryllium pebbles displayed high ductility (50% deformation without fracture), which is better than that of beryllide pebbles. One method based on contact mechanics was introduced to evaluate the range of effective modulus and stiffness of Be and Be12Ti from compression load curves in the elastic regime.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
