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Electrical conductivity relaxation measurements - water uptake and oxidation of BaCe0.6Zr0.2Y0.2-xFexO3-δ (x = 0.02, 0.05, 0.1)
Description
The dataset consists of 2 main catalogs: measurements performed for oxidation/reduction (Oxidation) and hydration/dehydration (Hydration). Each of them consists individual catalogs for the measurements performed on the samples indicated by the name of the catalog. In the case of oxidation/reduction, inside each them, there are catalogs indicating if the conditions of the measurement were dry or humid. At the lowest level above the raw data files, there catalogs indicating the temperatures at which the measerements have been conducted.
For Electrical Conductivity Relaxation (ECR) measurements, platinum reversible electrodes were applied in a four-probe arrangement and the sample was measured in the ProboStat™ measurement system. The oxidation/reduction measurements were performed after switching oxygen partial pressure between pO2 = 0.1 atm. and pO2 = 10^(-3) atm, while the hydration/dehydration employed the switch of water partial pressure between 10(-5) atm. and 0.023 atm.
Each file name contains information on the investigated process (oxidation/reduction or dry-wet/wet-dry for hydration/dehydration), and the electrical current used (if the resistance where determined by the appliance of DC current and the measured value was the voltage) or the sign "R" (indicating that the resistance was directly measuered by the equipment). Sometimes one measurement had to be divided into parts. In that case, the information about the part of the measurement data collection is included in the file name.
The measurements enabled the determination of the chemical diffusion coefficient and chemical surface exchange coefficient of oxygen and the corresponding activation energies for oxidation and reduction in dry and wet atmospheres for the BaCe0.6Zr0.2Y0.18Fe0.02O3-δ (BCZYFe2) and BaCe0.6Zr0.2Y0.1Fe0.1O3-δ (BCZYFe10) samples, as well as the determination of the chemical diffusion coefficient and the chemical surface exchange coefficient of water (or protons and oxygen ions separately) and the corresponding activation energies for hydration and dehydration in BaCe0.6Zr0.2Y0.18Fe0.02O3-δ (BCZYFe2), BaCe0.6Zr0.2Y0.15Fe0.05O3-δ (BCZYFe5), and BaCe0.6Zr0.2Y0.1Fe0.1O3-δ (BCZYFe10).
Dataset file
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.Example script for calculation:
https://github.com/antespi/s3md5
File details
- License:
-
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CC BYAttribution - Raw data:
- Data contained in dataset was not processed.
Details
- Year of publication:
- 2025
- Verification date:
- 2025-03-06
- Dataset language:
- English
- Fields of science:
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- materials engineering (Engineering and Technology)
- DOI:
- DOI ID 10.34808/mbnq-v171 open in new tab
- Funding:
- Series:
- Verified by:
- Gdańsk University of Technology
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