Praveen K. Sekhar, Eric L. Brosha
This study investigates the impact of yttria-stabilized zirconia (YSZ) sintering temperature on the performance of a Pt/YSZ/La0.8Sr0.2CrO3 mixed potential sensor. The sintering temperature of YSZ was systematically varied between 1000 and 1200 °C to assess its effect on sensor characteristics. Mercury porosity measurements were utilized to evaluate YSZ porosity and tortuosity, while the BET method was applied for surface area calculation. The baseline performance was established using the 1000 °C sintered YSZ as a reference. Results demonstrated that increasing the sintering temperature to 1200 °C led to a significant 30% reduction in porosity, corresponding to a 14-fold increase in sensor response rise time. Additionally, the YSZ sample sintered at this temperature exhibited a notable 13-fold enhancement in sensitivity to 100 ppm propylene, albeit with a 76% decrease in surface area. The observed slow response time was primarily attributed to elevated tortuosity, which hinders gas permeation to the three-phase boundary. Conversely, the increase in sensitivity was linked to reduced heterogeneous catalysis due to the lower surface area. Optimal sintering temperatures for YSZ were identified to be between 1100 and 1150 °C.
@article{cf97f214-dfe3-472b-a9f0-6539a363cdcc,
title={Effect of yttria stabilized zirconia sin},
author={Praveen K. Sekhar and Eric L. Brosha},
year={2026},
language={en}
}TY - JOUR TI - Effect of yttria stabilized zirconia sin AU - Praveen K. Sekhar AU - Eric L. Brosha PY - 2026 LA - en ER -
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