Tribología de nuevas capas autolubricantes producidas mediante PVD

Translated title of the contribution: Tribology of new solid lubricating films produced by PVD

J. I. Oñate*, M. Brizuela, A. Garcĩa-Luis, I. Braceras, S. Pacheco, J. L. Viviente

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

MoS2 coatings, deposited by PVD show a low friction under vacuum conditions, but degrade easily under atmospheric conditions. This work describes the development of a new type of MoSx, coating, modified with WC. These coatings presented a very low and stable friction coefficient lower than 0.04 when tested under vacuum at 0.75 GPa in a ball on disc tribometer. Durability was higher than 1 million wear cycles, showing a wear rate of 1.3 10e-16 m3 /Nm. When tested under atmospheric conditions and up to 70 % RH, friction increased to 0.15 and durability reached a lower value of up to 3 x 10e5 cycles.Surface analyses in these coatings showed S/Mo ratios higher than 1.2 and with oxygen levels lower than 2 %, demonstrating the lubricant character of the coating.
Translated title of the contributionTribology of new solid lubricating films produced by PVD
Original languageSpanish
Pages (from-to)148-153
Number of pages6
JournalRevista de Metalurgia
VolumeSPEC. VOL.
DOIs
Publication statusPublished - 2005

Keywords

  • MoS2
  • PVD
  • Solid lubricant coatings
  • Tribology
  • Wear
  • Friction

Project and Funding Information

  • Funding Info
  • Ministerio de Ciencia y Tecnología (proyecto MAT2001-1399-C02-02)_x000D_Departamento de Educación, Universidades e Investigación del Gobierno Vasco (proyecto PI-2001-12).

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