Cation inter-diffusion and formation of intermediate phases in CoO and La2NiO4+δ diffusion couples
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Date
2022
Authors
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Journal ISSN
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Publisher
Elsevier
Abstract
Cation interdiffusion between La2NiO4+δ (LN) and CoO diffusion couples was investigated by thermal annealing in ambient air at 1200 °C for 48 and 168 h, and analysis of the cross sections by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Co diffusion into the LN layer was significant, while Ni diffusion into the CoO layer was minor. Formation of LaCoO3, LaCo0.5Ni0.5O3, and La3(Ni0.8Co0.2)2O7 were observed in the LN layer at increasing distance from the boundary.
Description
Abstract. Full text article is available at https://doi.org/10.1016/j.matlet.2021.131507
Keywords
Cation, Cation inter-diffusion, CoO, La2NiO4+δ, CoO diffusion couples
Citation
Sahini, M. G., Wiik, K., & Grande, T. (2022). Cation inter-diffusion and formation of intermediate phases in CoO and La2NiO4+ δ diffusion couples. Materials Letters, 310, 131507.