Mechanical Behavior Monitored by Acoustic Emission of Nanostructured Alumina-Titania Coatings
[EN] This study aims to evaluate the mechanical behavior of nanostructured and conventional alumina-titania coatings by means of combining four-point bend tests monitored with acoustic emission. Determination of bending strength, along with information received from acoustic emission signal, such as...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/203850 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/203850 |
| Access Level: | acceso abierto |
| Palabra clave: | Atmospheric plasma spraying Nanostructured coatings Alumina-titania acoustic emission Four-point bend test CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA |
| Sumario: | [EN] This study aims to evaluate the mechanical behavior of nanostructured and conventional alumina-titania coatings by means of combining four-point bend tests monitored with acoustic emission. Determination of bending strength, along with information received from acoustic emission signal, such as quantity, amplitude, energy and length of events gives a better understanding of failure mechanisms in coatings. This information has been complemented with optical analysis of fracture surfaces. Failure of coatings has been observed to follow four stages that are clearly defined in the acoustic emission data. This fracture behavior has been observed for all three types of coating tested, but the nanostructured coating presented the best combination of hardness and strength, due to its duplex microstructure. |
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