التفاصيل البيبلوغرافية
| العنوان: |
Formation, Transformation, and Electrical Performance of Magnéli Phases Obtained by Flame Spraying from TiO2 Particles |
| المؤلفون: |
Vargas-Galvis, F., Holguín-Villa, J. D., Arias Gómez, J. A., Mejía, A. F., Velásquez, A. A., Arroyave, M., Palacio Espinosa, C. C. |
| المساهمون: |
University of Antioquia |
| المصدر: |
Journal of Materials Engineering and Performance ; ISSN 1059-9495 1544-1024 |
| بيانات النشر: |
Springer Science and Business Media LLC |
| سنة النشر: |
2023 |
| مصطلحات موضوعية: |
Mechanical Engineering, Mechanics of Materials, General Materials Science |
| الوصف: |
In this paper, the formation and transformation of Magnéli phases (Ti n O 2n-1 ) during manufacturing of flame-sprayed coatings from two powders consisting of anatase nanoparticles and submicrometric particles with Magnéli phases is analyzed, respectively. These powders were thermally sprayed on a ceramic substrate through oxidizing and neutral flame. Crystalline phases in powders and coatings were identified by x-ray diffraction and quantified by the Rietveld method, verifying the presence of identified crystalline phases in coatings by x-ray photoelectron spectroscopy. Finally, the electrical conductance of coatings was measured by the four-point probe method. Results indicate that Magnéli phases are produced from anatase nanoparticles sprayed using both the oxidizing and neutral flames, and when the neutral flame and finest particles are used, a high quantity of Ti 4 O 7 and Ti 5 O 9 , recognized thanks to their high electrical conductivity, is obtained. In contrast, when the coatings were fabricated from the powder containing Magnéli phases, they were oxidized as much in oxidizing as in neutral flame, producing a partial transformation from Ti 4 O 7 and Ti 5 O 9 to both the rutile phase and TiO in low quantity. In spite of this partial transformation, the coatings maintain high electrical conductivity thanks to Ti 4 O 7 and Ti 5 O 9 Magnéli phases remaining and the TiO produced. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1007/s11665-023-08887-1 |
| DOI: |
10.1007/s11665-023-08887-1.pdf |
| DOI: |
10.1007/s11665-023-08887-1/fulltext.html |
| الإتاحة: |
https://doi.org/10.1007/s11665-023-08887-1Test |
| حقوق: |
https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: |
edsbas.DEA6BF15 |
| قاعدة البيانات: |
BASE |
