Abstract
Oxygen diffusion coefficients have been determined for polycrystalline samples of NiCr2O4 and α‐Fe2O3 by exchange measurements with oxygen gas containing the stable isotope18O, using mass spectrometer analysis. Oxygen diffusion in NiCr2O4 can be represented by the equation D = 0.017 exp (‐65,400/RT); oxygen diffusion in α‐Fe2O3 can be represented by the equation D = 1 × 1011 exp (‐146,000/RT). The large difference between D0 and activation energy for these materials suggests that different diffusion mechanisms are involved.
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.
