Abstract
AbstractNi is known to have a significant impact on the sintering and microstructure evolution in yttrium‐doped barium zirconate (BZY) and yet details of its specific role remain unclear. The present study examined the valence state of Ni in solid‐state reactive sintered BZY prepared with different amounts of Ni, formulated for deliberate substitution of Ni for Zr : BaZr0.8−xY0.2NixO3−δ with x = 0.005, 0.01, 0.02, 0.03, 0.04 (approx. 0.1 wt%, 0.2 wt%, 0.4 wt%, 0.6 wt%, 0.8 wt%). Quenching from revealed transient BaY2NiO5 phase was present in the microstructure for all concentrations of Ni studied here. Energy‐dispersive X‐ray spectroscopy identified Ni segregation in grain‐boundary regions upon completion of the solid‐state reactive sintering process, and magnetometry is used to show that low‐spin Ni3+ predominantly substitutes for Zr4+.
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.
