Vacuum tribological behaviour of self lubricant quasicrystalline composite coatings

Garcia de Blas Villanueva, Francisco Javier; Miguel, C. de; Longo, F.; Muelas, R. y Agüero, A. (2003). Vacuum tribological behaviour of self lubricant quasicrystalline composite coatings. En: "10th European Space Mechanisms and Tribology Symposium", 24/09/2003-26/09/2003, San Sebastián, España. ISBN 92-9092-834-4.

Descripción

Título: Vacuum tribological behaviour of self lubricant quasicrystalline composite coatings
Autor/es:
  • Garcia de Blas Villanueva, Francisco Javier
  • Miguel, C. de
  • Longo, F.
  • Muelas, R.
  • Agüero, A.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 10th European Space Mechanisms and Tribology Symposium
Fechas del Evento: 24/09/2003-26/09/2003
Lugar del Evento: San Sebastián, España
Título del Libro: Proceedings of 10th European Space Mechanisms and Tribology Symposium
Fecha: Septiembre 2003
ISBN: 92-9092-834-4
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-lubricant coatings are needed in space vehicles for components that operate at high temperatures and/or under vacuum. Thick composite lubricant coatings containing quasicrystalline alloys (QC) as the hard phase for wear resistance, have been deposited by thermal spray. The coatings also comprise lubricating materials (silver and BaF2-CaF2 eutectic) and NiCr as the tough component. This paper describes the vacuum tribological properties of TH103, a coating belonging to this family, with excellent microstructural quality. The coating was deposited by HVOF and tested under vacuum on a pin-on-disc tribometer. Different loads, linear speeds and pin materials were studied. The pin scars and disc wear tracks were characterized by EDS-SEM. A minimum mean steady friction coefficient of 0.32 was obtained employing a X-750 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: 7324
Identificador DC: http://oa.upm.es/7324/
Identificador OAI: oai:oa.upm.es:7324
URL Oficial: http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=33776
Depositado por: Memoria Investigacion
Depositado el: 03 Jun 2011 10:54
Ultima Modificación: 20 Abr 2016 16:29
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