Effect of Ni Diffusion on the Microstructure of Gd-Doped Ceria (GDC) Electrolyte Film Supported by Ni-GDC Cermet Anode
2010 年 35 巻 2 号 p. 401-404
詳細
2010 年 35 巻 2 号 p. 401-404
Gd-doped ceria (GDC) films supported by NiO-GDC substrates were prepared by electrophoretic deposition followed by co-sintering and reduction of NiO into metallic Ni. The detailed chemical and microstructural features of the samples before and after the reduction treatment were investigated. Inhomogeneous microstructures including nano-sized domains and superstructure were observed, and their formation was enhanced due to the diffusion of Ni. It is suggested that the Ni diffusion and the formation of inhomogeneous microstructures can form a layer in the GDC film close to the film/substrate interface, which has relatively low conductivity.
