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J. Korean Ceram. Soc. > Volume 61(3); 2024 > Article
Journal of the Korean Ceramic Society 2024;61(3): 419-428.
doi: https://doi.org/10.1007/s43207-023-00363-9
Quantification of correlation between microstructure and mechanical properties of Ni–BaZrxCe0.8−xY0.1Yb0.1O3-δ (x = 0.1, 0.5) cermet anodes by image analysis
Saron Park, Eun-Il Kim, Bhupendra Singh, Sun-Ju Song
School of Materials Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea
Correspondence  Sun-Ju Song ,Email: song@chonnam.ac.kr
Received: October 20, 2023; Revised: November 5, 2023   Accepted: December 17, 2023.  Published online: February 12, 2024.
In this study, the effect of sintering temperature on microstructure and mechanical properties of Ni–BaZrrxCe0.8−xY0.1Yb0.1O3-δ (Ni–BZCYYb); x = 0.1 and 0.5, cermet anodes for protonic ceramic fuel cells (PCFCs) were investigated. A 2-dimensional (2D) stereological method which involves viable image processing was used to quantify the effect of sintering temperature on the volume fraction and interconnectivity of pores and solid phases between 1300 and 1450 °C. 3-point bending test indicates that bending strength (σ) for Ni–BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (Ni–BZCYYb17) are higher than those for Ni–BaZr0.5Ce0.3Y0.1Yb0.1O3-δ (Ni–BZCYYb53) specimens, and the specimens sintered at 1400 °C have highest value of bending strength. To complement the results obtained from the bending strength and image processing, the Weibull modulus (m) values of the Ni–BZCYYb cermets were calculated.
Key words: Ni–BaZrxCe0.8−xY0.1Yb0.1O3-δ cermet anode  · Protonic ceramic fuel cells  · Image processing  · Fracture stress  · Weibull modulus
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