Abstract
This study investigates the kinetics of hot corrosion of pure nickel exposed to different testing conditions at 700 °C. Whereas nickel underwent pure oxidation when exposed to synthetic air only, the addition of 0.5% SO2/SO3 induced oxidation-sulphidation and considerably increased the corrosion kinetics. In the presence of sodium sulphate (Na2SO4), Ni-S liquid solutions systematically formed at the metal/scale interface. This was attributed to the shielding effect of Na2SO4 implying negative pO2 and pSO3 gradients from the gas/salt interface towards the scale/salt interface. The influence of thermal cycling as well as the testing method (i.e. half-embedding and salt-recoating) was also elucidated.
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.
