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| Content Provider | Springer Nature Link |
|---|---|
| Author | Gawel, Richard Przybylski, Kazimierz Viviani, Massimo |
| Copyright Year | 2013 |
| Abstract | The objective of this work is to analyse the chemical stability of BaCe$_{0.85}$Y$_{0.15}$O$_{3−δ }$–Ce$_{0.85}$Y$_{0.15}$O$_{2−δ }$ (BCY15–YDC15) composite materials at 600 °C and to compare the aforementioned chemical stability with that of pure BCY15. The composite powders were obtained by mixing together powders of BCY15 and YDC15 in the following volume fractions: 90 % BCY15 + 10 % YDC15, 70 % BCY15 + 30 % YDC15, 30 % BCY15 + 70 % YDC15, 20 % BCY15 + 80 % YDC15 and 10 % BCY15 + 90 % YDC15. After that both powders and sintered samples of the BCY15 and the BCY15–YDC15 composites were saturated in two different atmospheres at 600 °C: CO$_{2}$/H$_{2}$O (3.1 mol% H$_{2}$O) and N$_{2}$/H$_{2}$O (46.8 mol% H$_{2}$O). The effects of the previously mentioned atmospheres on the physicochemical properties of the samples were investigated via differential thermal analysis (DTA) combined with thermogravimetric analysis (TG). Furthermore, mass spectrometry was used to analyse the chemical composition of the gases released from the samples during the DTA–TG heating process. The surface and cross-section morphology of the samples were examined by scanning electron microscopy. Moreover, the phase composition of each sample was studied via X-ray Diffraction. From the combined analysis, it can be concluded that the addition of YDC15 in the composite samples leads to an increase in resistance against the corrosive effects of CO$_{2}$. Furthermore, it was determined that all samples maintain stability in the presence of H$_{2}$O at 600 °C. |
| Starting Page | 895 |
| Ending Page | 903 |
| Page Count | 9 |
| File Format | |
| ISSN | 13886150 |
| Journal | Journal of thermal analysis |
| Volume Number | 116 |
| Issue Number | 2 |
| e-ISSN | 15882926 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2013-12-11 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Perovskites Composite materials Fuel cell electrolytes Chemical stability Corrosion resistance Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Condensed Matter Physics |
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