A Study on the Density and Hardness of Y³⁺-Doped Ba(Ce,Zr)O₃ Solid Electrolyte
DOI:
https://doi.org/10.56532/mjsat.v6iS1.796Keywords:
BCZY electrolytes, Proton Conducting Oxides, Relative Density, Vickers HardnessAbstract
The Y3+-doped Ba(Ce,Zr)O3 type oxide is a proton-conducting ceramic electrolyte that has been widely studied for application in proton ceramic fuel cells (PCFCs), separation membranes, and other electrochemical devices due to its high proton conductivity, chemical stability, and mechanical durability. The mechanical and physical properties, particularly density and hardness, are crucial to ensuring the performance and durability of the PCFCs. Hence, this study is performed to investigate the density and hardness of BCZY pellets after being sintered at T= 1450 oC. The two methods, Archimedes and geometrical, were employed to determine the density of the sintered BCZY pellets, while the Vickers Hardness method was used to assess mechanical strength. The results showed relative densities of 90.7% for Archimedes' method and 91.1% for the geometrical method, while the measured Vickers hardness was 508.3 HV (4.99 GPa). These findings show that high-density pellets exhibited acceptable mechanical strength, required for robust electrochemical devices.
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