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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wu, Hann Pyng Fung, Kuan Zong |
| Copyright Year | 2013 |
| Abstract | Enthalpy-enhancing gas is used to optimize the ionic conductivity of atmospheric plasma-sprayed 3.9 mol% yttria-stabilized zirconia (3.9YSZ) electrolyte. In the experiment, three hydrogen gas-flow rates were used to control the plasma energy. The size of the 3.9YSZ feedstock powder was sieved to be set in the range of 45-75 μm. When the hydrogen gas-flow rate was increased, the electrolyte became harder, and the sprayed surfaces became smoother. However, the lowest apparent porosity and the highest bulk density of the electrolyte were obtained at a hydrogen gas-flow rate of 7 L/min. A 3.9YSZ electrolyte with an ionic conductivity of 2860 µ(S/cm) and the lowest dissociation energy was obtained at 800 °C with a hydrogen gas-flow rate of 12 L/min. It was controlled by the intragrain conductivities. A higher hydrogen gas-flow rate enhanced the growth of columnar grains and suppressed the appearance of the monoclinic phase, which led to the greater intragrain conductivities. The increase in grain-boundary conductivities is closely related to the decrease in grain size. |
| Starting Page | 1014 |
| Ending Page | 1023 |
| Page Count | 10 |
| File Format | |
| ISSN | 10599630 |
| Journal | Journal of Thermal Spray Technology |
| Volume Number | 22 |
| Issue Number | 6 |
| e-ISSN | 15441016 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-05-02 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | conductivity electrolyte enthalpy-enhancing gas plasma-sprayed electrolyte yttria-stabilized zirconia Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Operating Procedures, Materials Treatment Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Materials Chemistry Condensed Matter Physics |
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