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Physical and technological interpretation of mechanical properties for single and multi-layer films with properties of dry lubricants

A. O. MATEESCU1,2, G. MATEESCU1, V. JINGA2,* , D. CRISTEA2, C. SAMOILĂ2, D. URSUŢIU1, D. MUNTEANU2

Affiliation

  1. AEG Progresiv S.R.L., 6 Nucsoara Street, B. 42 / E / 70, 060524 Bucharest, Romania
  2. Transilvania University of Brasov, 29 Eroilor Blvd., 500036, Brasov, Romania

Abstract

The starting point of this research was a project for the Romanian Space Agency regarding improvement of lubrication properties of the materials used in extreme conditions (e.g. in outer space). As a further idea, this approach is also healthy for Earth`s environment, by replacing oil lubricants and so, pollution caused by all these will decrease. Another place for applications can be cutting tools from the industrial domain – where temperatures of both cutting tool and part are decreased during the machining process by using cooling fluids, which are expensive, can be toxic and produce a significant waste stream (not healthy). The proposed solution for all of these problems are multilayer films, special coatings deposited in such a way, under aspect of used materials and deposition conditions, that they become dry lubricants. For this reason, the research team did some experimental depositions using simple and compound materials (Ti, TiB2, WC, WS2) through Standard or Reactive DC and RF Magnetron Sputtering Method, in presence or not of N2 as a reactive gas. Probes were then tested and analyzed by the CSM Table Top Platform equipment. All results were taken into consideration for improving the deposition methodology and for obtaining good multilayer films that have characteristics of dry lubricants..

Keywords

Dry lubricant coatings, Multilayer coatings, Wear resistance.

Submitted at: April 9, 2015
Accepted at: June 24, 2015

Citation

A. O. MATEESCU, G. MATEESCU, V. JINGA, D. CRISTEA, C. SAMOILĂ, D. URSUŢIU, D. MUNTEANU, Physical and technological interpretation of mechanical properties for single and multi-layer films with properties of dry lubricants, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 7-8, pp. 1152-1160 (2015)