Abstract
Oxide films formed as corrosion products at high temperatures on metallic components of advanced nuclear systems constitute a complex environment in which a wide range of phenomena have usually an important role to play. From this wide range of phenomena, three diffusion-controlled processes are discussed in this paper. The oxidation of Ni to NiO is used as a simple model for studying growth of corrosion-resistant films in nuclear reactors. Transport processes in amorphous SiO 2 are then examined in the context of the highly protective properties of SiO 2 films. Finally, deformation processes in oxides are discussed again using NiO as an example. The observed creep rates indicate that in single crystals creep is controlled by lattice diffusion of oxygen to allow dislocations climb, whereas in polycrystalline material it is controlled by grain boundary diffusion of oxygen to allow grain boundary sliding and changes in grain shape.
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.
