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Lubricants, Volume 13, Issue 4

April 2025 - 56 articles

Cover Story: The following study explores how small laser-textured dimples improve the tribological performance of CoCrMo (CCM) surfaces in artificial hip joints. Arrays of 5 µm diameter dimples were created with varying aspect ratios and surface densities and then tested against UHMWPE counterfaces. The textured surfaces showed up to 60% lower and more stable coefficients of friction, together with reduced wear, compared to untextured or traditionally textured CCM. Among them, low-density dimples performed best by promoting a stable, uniform lubricant film. These results highlight the potential of precise surface texturing to significantly enhance the durability and efficiency of joint replacements. View this paper
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Articles (56)

  • Article
  • Open Access
1,077 Views
20 Pages

Filtered cathodic vacuum arc (FCVA) deposition technology was applied to prepare tetrahedral amorphous carbon (taC) thin films with different substrate pulse biases. Their structure, adhesion strength, and corrosion behavior in 5 × 10−2 M...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,397 Views
16 Pages

An Experimentally Validated Cavitation Model for Hydrodynamic Bearings Using Non-Condensable Gas

  • Sören Wettmarshausen,
  • Alexander Engels,
  • Thomas Hagemann,
  • Michael Stottrop,
  • Christoph Weißbacher,
  • Hubert Schwarze and
  • Beate Bender

Despite great research effort in recent decades, cavitation in hydrodynamic journal bearings is still a not completely understood phenomenon. In particular, it is unclear which proportions of different cavitation types are present in a bearing. Novel...

  • Article
  • Open Access
1,104 Views
20 Pages

Turbulence and instability problems are unavoidable challenges for fluid film bearings as rotation speed continues to rise. This paper investigates the effect of turbulence on the dynamic characteristics of two non-circular journal bearings, hybrid t...

  • Article
  • Open Access
5 Citations
1,530 Views
24 Pages

The characteristics of pavement texture are key determinants of skid resistance, directly affecting tire-pavement interactions. This study examines the relationship between separated pavement textures and friction coefficients under dry and wet condi...

  • Article
  • Open Access
2 Citations
2,751 Views
18 Pages

The optimization of passenger car efficiency is an important contribution to GHG emissions mitigation. This global warming concern is pushing technological solutions to reduce vehicle fuel consumption and consequently CO2 emissions. In this work, the...

  • Article
  • Open Access
1 Citations
1,249 Views
17 Pages

Tribological Effects of Martian Regoliths on Stainless Steel with Natural and Composite Lip Seal and Packing Materials

  • Gábor Kalácska,
  • György Barkó,
  • Tamás Bálint,
  • Róbert Keresztes,
  • László Székely and
  • Zoltán Károly

We have investigated the sealing performance of different sealants and the abrasive effect of some Martian regolith simulants (MGS-1 and JEZ-1) by pin-on-disc tests using steel and various pin material pairs. Pin materials, representing sealants, wer...

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Lubricants - ISSN 2075-4442