Tribological effects of surface texturing on nitriding steel for high-performance engine applications

By A. Borghi, E. Gualtieri, D. Marchetto, L. Moretti, S. Valeri. 2008

302 citations recorded by the source corpus.

Abstract This study reports on the effects of surface modification by laser texturing on tribological performances of nitriding steel for high-performance engine applications. In particular, a comparison of tribological properties on untextured and textured 30NiCrMo12 nitriding steel was made among hydrodynamic, mixed and boundary lubrication regimes. Ordered arrays of circular dimples were created on nitriding steel surfaces by Laser Surface Texturing. Friction experiments were performed using a pin-on-disc apparatus at sliding speeds ranging from 1 to 12 cm s−1 and nominal contact pressures ranging from 1 to 10 MPa. Static counterpart was a custom pin of 100Cr6 steel. Two different configurations were studied: “single drop” lubrication and “dry contact”. Long sliding condition tests and Stribeck curves were obtained. Finally, Secondary Electron Microscopy imaging and Energy Dispersive Spectroscopy investigations were carried out to study morphology and chemistry at surfaces, before and after tribological tests. Maximum effects of Laser Surface Texturing on friction coefficient and wear have been observed in “single drop” configuration at high normal applied load and for long sliding time.

Subfields: Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/6d549b04a51b4d1135a5542c39e13c31a38fb51e

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In Mechanical Engineering

1. A. Rosenkranz
2. T. Reddyhoff
3. S. Vlădescu
4. A. Olver
5. I. Pegg
6. C. Putignano
7. Mehmet Baykara
8. Ashlie Martini

In Mechanics of Materials

1. A. Rosenkranz
2. Giuseppe Carbone
3. Mehmet Baykara
4. T. Reddyhoff
5. S. Vlădescu
6. A. Olver
7. I. Pegg
8. C. Putignano

Citations in the corpus

• Combined friction and wear reduction in a reciprocating contact through laser surface texturing (2016, methodology): “[37] examined the chemical composition of textured and non-textured surfaces using Energy Dispersive Spectroscopy (EDS).”
• Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review (2021, result): “Since then, other studies have reported lower friction [66-73] and reduced wear [66, 68-70,”
• Modeling and simulation in tribology across scales: An overview (2018, background): “[520] Borghi A, Gualtieri E, Marchetto D, Moretti L , Valeri S.”