Abstract
Abstract α-Al2O3 tritium permeation barriers were exposed in a 1-MPa He+0.5-MPa H2 atmosphere to Li4SiO4 ceramic tritium breeder at 623 K for 120–1000 h, to evaluate its chemical compatibility in a simulated breeder blanket environment. The as-deposited coating is composed of the α-Al2O3 phase with a uniform and dense surface morphology. The short-term (below 360 h) effects of corrosion are almost negligible. However, the morphology and structure of the coating change significantly when the corrosion time reaches 1000 h, and grain boundary corrosion, delamination, holes and corrosion products of LiAlO2 are observed. A microscopic model is proposed to understand the corrosion mechanism of the α-Al2O3 coating in contact with the Li4SiO4 ceramic.
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.
