Abstract
To study the effect of oxygen partial pressure on grain growth in Cr2O3 doped UO2 pellets, small amount of Cr2O3 doped UO2 samples have been sintered with and without a stepwise change of sintering atmospheres. An introduction of a stepwise increase of oxygen potential during the isothermal sintering stage enhances the grain growth of UO2 pellets greatly. This stepwise sintering effect has been explained in terms of a maximized residual Cr3+ concentration in grain boundaries throughout the entire sintering process. It was demonstrated that a stepwise sintering technique can reduce the doped amount of Cr2O3 to a minimum level while keeping the large grain size.
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.
