Effect of spinels on the mechanical and tribological behavior of plasma sprayed alumina based coatings
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URI: http://hdl.handle.net/10317/10706ISBN: 978-84-606-8904-1
DOI: 10.31428/10317/10706
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Rico García, Álvaro; Salazar López, Alicia; Múnez Alba, Claudio José; Verdi, Davide; Escobar Torres, Miguel; [et al.]Grupo de investigación
DIMME. Grupo Durabilidad e Integridad Mecánica de Materiales Estructurales. Universidad Rey Juan Carlos. (Madrid – Spain)Área de conocimiento
Ingeniería MecánicaRealizado en/con
Universidad Politécnica de CartagenaFecha de publicación
2015Editorial
Universidad Politécnica de CartagenaCita bibliográfica
Rico, A.; Salazar, A.; Múnez, C.J.; Verdi, D.; Escobar, M.; Poza, P.; Rodriguez, J. Effect of spinels on the mechanical and tribological behavior of plasma sprayed alumina based coatings. En: Proceedings of the VIII Iberian Conference on Tribology: Conference Proceedings. Cartagena: Universidad Politécnica de Cartagena, Servicio de Documentación, 2015. Pp. 295-301. ISBN: 978-84-606-8904-1Palabras clave
IBERTRIBFriction
Wear
Ionic liquids
Lubricants
Resumen
Plasma sprayed ceramic coatings are widely used to protect metallic substrates
when high temperature and/or friction are developed in service. In particular, alumina
based coatings have been extensively used. Examples of applications are pistons in
pumps or internal combustion engines and steam valve spindles. Alumina is hard, it
shows a very high oxidation resistance and it is not permeable to aggressive gases.
However, the alumina main drawback is its low fracture toughness. Brittle fracture is
one of the most common wear mechanisms reported for ceramics. It is well known
that the fracture toughness and the operative conditions are the key parameters
controlling the crack propagation throughout the material. As a consequence,
transition from mild to severe wear in ceramic coatings is mainly controlled by the
fracture toughness of the coating. The typical solutions to improve the fracture
behavior of alumina coatings are based on mixing alumina powders with other
ceramic ...
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