Improvement of the Tribological Behavior of a Steel Ally by a Composite Liner
Source: Dr. Kaid-AmeurDjilali & Dt. Esseghier rosa, "Improvement of the Tribological Behavior of a Steel Ally by a Composite Liner,” Journal of Mechanical Engineering Research and Developments, vol. 40, no. 3, pp. 471-480, 2017.
Document Type: Research Article
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Abstract: The interest of composite coatings to limit wear or improve the friction is supported by numerous studies. Most of these are interested in the comparison of the tribological behavior of a Matrix with and without particles. In effect, the incorporation of particles causes of variations in mechanical properties intrinsic to the Matrix likely to modify the behavior of the tribological coatings.Zum-Gahr  specified that in the case of composites, the intrinsic characteristics of particles can play an essential role on the resistance to abrasion. It also shows in the case of particles not isotropic that their orientation and their size are non negligible parameters. As recalled precisely S.Vaillant , the term of composites encompasses the matrices strengthened by particles aiming at the biphase alloys as when it hardens by thermal treatment of alloys NiP by precipitation of phosphides of nickel Ni3P in the nickel [3, 4]. Several authors have compared the values of the coefficient of friction and wear obtained for a composite deposit with those of the matrix alone, in the aim of highlighting a lubricant effect of certain particles [5, 6]. The work focuses on "Coatings multifunctional composites for the transport industry". TB substrate interfaces / tabling purpose particles / matrix in order to explain the results of the tests exploratory tribological in comparison with the deposit of the hard chrome . The parameters of influence studied are the content of talc coatings and the thermal treatments to 600°C under nitrogen during one hour.
Keywords: Tribology; Composite; Coatings; Friction; Wear.