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Lubricants, Volume 8, Issue 6

June 2020 - 6 articles

Cover Story: The strive for improved efficiency of machine components implies increasingly severe operating conditions for the lubricated non-conformal surfaces present in, for example, bearings and gears. In this work, such contacts are studied in time through numerical simulations with consideration of lubricant flow, elasticity, thermal effects, and non-Newtonian rheology. The results provide insights into how lubricant shear and thermal effects influence the predominant lubricating mechanisms for both wavy surfaces and surface features that overtake within the lubricated contact. View this paper
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Articles (6)

  • Article
  • Open Access
14 Citations
5,722 Views
15 Pages

Friction and Temperature Behavior of Lubricated Thermoplastic Polymer Contacts

  • Stefan Reitschuster,
  • Enzo Maier,
  • Thomas Lohner and
  • Karsten Stahl

This work focuses on the friction and temperature behavior of thermo-elastohydrodynamically lubricated (TEHL) contacts under rolling-sliding conditions. For this purpose, a twin-disk test rig is used with a hybrid setup of plain and fiber-reinforced...

  • Article
  • Open Access
3,217 Views
18 Pages

There are two types of friction modifiers (FMs) used as lubricant additives: Reaction film FMs (RF-FMs) and adsorption film FMs (AF-FMs). While RF-FMs provide good performance in severe conditions, AF-FMs excel in mild conditions. This empirical evid...

  • Article
  • Open Access
7 Citations
4,481 Views
27 Pages

Machine components are designed to endure increasingly severe operating conditions due to the strive for improved energy efficiency of mechanical systems. Consequently, lubricated non-conformal contacts must rely on thin lubricant films where the inf...

  • Article
  • Open Access
3 Citations
4,032 Views
19 Pages

Nanocrystalline PEO (plasma electrolytical oxidation) coatings were performed on Al 6082 and Mg AZ31 alloys, resulting in hard, dense and wear-resistant surfaces to increase the wear resistance of those alloys. To soften the wear influence on the cou...

  • Editorial
  • Open Access
4 Citations
5,838 Views
10 Pages

Tribology and Dowson

  • Nicholas John Morris,
  • Patricia M. Johns-Rahnejat and
  • Homer Rahnejat

It is with great sadness that we note the passing of Professor Duncan Dowson on 6th January 2020. Duncan was an esteemed member of the Editorial Board of this journal. He will be remembered as one of the founding fathers of tribology and as a true ge...

  • Article
  • Open Access
12 Citations
4,063 Views
16 Pages

Improvement in the Hard Milling of AISI D2 Steel under the MQCL Condition Using Emulsion-Dispersed MoS2 Nanosheets

  • Pham Quang Dong,
  • Tran Minh Duc,
  • Ngo Minh Tuan,
  • Tran The Long,
  • Dang Van Thanh and
  • Nguyen Van Truong

The present work shows the process for MoS2 nanosheet production by liquid N2-queched bulk, a novel method having highly efficient, green, and facile operation. The produced MoS2 nanoparticles are suspended in minimum quantity cooling lubrication (MQ...

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Lubricants - ISSN 2075-4442