Vacuum Tribological Behaviour of Self-Lubricating Quasicrystalline Composite Coatings

Garcia de Blas Villanueva, Francisco Javier; Roman, A.; Miguel, C. de; Longo, F.; Muelas, R. y Agüero, A. (2004). Vacuum Tribological Behaviour of Self-Lubricating Quasicrystalline Composite Coatings. "Tribotest", v. 11 (n. 2); pp. 103-111. ISSN 1354-4063. https://doi.org/10.1002/tt.3020110203.

Descripción

Título: Vacuum Tribological Behaviour of Self-Lubricating Quasicrystalline Composite Coatings
Autor/es:
  • Garcia de Blas Villanueva, Francisco Javier
  • Roman, A.
  • Miguel, C. de
  • Longo, F.
  • Muelas, R.
  • Agüero, A.
Tipo de Documento: Artículo
Título de Revista/Publicación: Tribotest
Fecha: Diciembre 2004
Volumen: 11
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

High-temperature-resistant self-lubricating coatings are needed in space vehicles for components that operate at high temperatures and/or under vacuum. Thick composite lubricant coatings containing quasicrystalline alloys as the hard phase for wear resistance can be deposited by a thermal spray technique. The coatings also contain lubricating materials (silver and BaF2CaF2 eutectic) and NiCr as the tough component. This paper describes the vacuum tribological properties of TH103, a coating of this type, with a very good microstructural quality. The coating was deposited by high-velocity oxygen fuel spraying and tested under vacuum using a pin-on-disc tribometer. Different loads, linear speeds, and pin materials were studied. The pin scars and disc wear tracks were characterised using a combination of scanning electron microscopy and energy dispersive spectrometry. A minimum mean steady friction coefficient of 0.32 was obtained when employing an X750 Ni superalloy pin in vacuum conditions under 10 N load and 15 cm/s linear speed, showing moderate wear of the disc and low wear of the pin

Más información

ID de Registro: 7316
Identificador DC: http://oa.upm.es/7316/
Identificador OAI: oai:oa.upm.es:7316
Identificador DOI: 10.1002/tt.3020110203
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1002/tt.3020110203/abstract
Depositado por: Memoria Investigacion
Depositado el: 03 Jun 2011 11:32
Ultima Modificación: 20 Abr 2016 16:28
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