| Téléchargement | - Voir le manuscrit accepté : Phase formation and transformation in alumina/YSZ nanocomposite coating deposited by suspension plasma spray process (PDF, 791 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1007/s11666-009-9461-8 |
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| Auteur | Rechercher : Tarasi, F.; Rechercher : Medraj, M.; Rechercher : Dolatabadi, A.; Rechercher : Oberste-Berghaus, J.1; Rechercher : Moreau, C.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut des matériaux industriels du CNRC
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| Format | Texte, Article |
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| Sujet | alumina/yttria-stabilized zirconia; amorphous phase; ceramic composite coating; crystalline structure; suspension plasma spray; thermal changes |
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| Résumé | Suspension Plasma Spray process was used for deposition of pseudo-eutectic composition of aluminayttria- stabilized zirconia as a potential thermal barrier coating using Mettech axial III torch. Process variables including feed and plasma parameters were altered to find their effects on the formation of phases in the composite coating. The in-flight particle velocity was found to be the crucial parameter on phase formation in the resulting coatings. Low particle velocities below 650 m/s result in the formation of stable phases i.e., a-alumina and tetragonal zirconia. In contrast, high particle velocities more than 750 m/s favor the metastable c-alumina and cubic zirconia phases as dominant structures in as-deposited coatings. Accordingly, the plasma auxiliary gas and plasma power as influential parameters on the particle velocity were found to be reliable tools in controlling the resulting coating structure thus, the consequent properties. The noncrystalline portion of the coatings was also studied. It was revealed that upon heating, the amorphous phase prefers to crystallize into pre-existing crystalline phases in the as-deposited coating. Thus, the ultimate crystalline structure can be designed using the parameters that control the particle velocity during plasma spray coating. |
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| Date de publication | 2010-06-01 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 52374 |
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| Numéro NPARC | 16891217 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | fd397904-1c36-4546-a4a3-89523df2542d |
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| Enregistrement créé | 2011-02-20 |
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| Enregistrement modifié | 2020-04-17 |
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