Thermal Treatment and Improvement of Tribologycal Properties of Automotive Ring by Laser Methods

Helder Souza de Oliveira; Claudio Luis Santos; Viviane Teleginski; Getúlio Vasconcelos

doi:10.4028/www.scientific.net/MSF.802.377

Paper Titles

Plasma Sintering-Carburizing of 410 LHC Steel in Carbon Containing Atmosphere
p.353

Characterization of the AISI 304 Alloy Treated in a Large Vacuum Chamber PIII System with a New HV Pulser
p.359

Evaluation of Heat Absorption in Iron Ore Using Microwave Energy Source
p.367

Mechanical Characterization of a Steel AISI 43100 Submitted to Different Routes of Heat Treatments
p.373

Thermal Treatment and Improvement of Tribologycal Properties of Automotive Ring by Laser Methods
p.377

Influence of Temperature on Ductile-Fragile Behavior
p.383

Adherence Analysis of DLC Films Grown on AISI M2 Steel Substrates as a Function of Silicon Interlayer Thickness
p.388

Friction and Wear Behavior Evaluation of DLC Films Grown in Multilayer of Carbon and Silicon
p.392

Study of Cooling Rate Influence on SAF 2205 Duplex Stainless Steel Solution Annealed
p.398

HomeMaterials Science ForumMaterials Science Forum Vol. 802Thermal Treatment and Improvement of Tribologycal...

Thermal Treatment and Improvement of Tribologycal Properties of Automotive Ring by Laser Methods

Abstract:

This work presents the results of treatments by CO₂ laser of automotive rings covered with carbon black slurry, aiming to improve the friction rate and the ring lifetime. The results of this treatment were characterized by scanning electron microscopy, Vickers hardness, ball on disk test and X-ray energy dispersive spectroscopy. The scanning electron microscopy showed that the laser treated area extent reaches near to 120 μm depth. The measured hardness was about 950 HV_0,05 and the friction coefficient lower than 0.2. The energy dispersive spectroscopy along the treated cross section showing carbon diffusion into the metallic substrate.

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Periodical:

Materials Science Forum (Volume 802)

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377-382

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https://doi.org/10.4028/www.scientific.net/MSF.802.377

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Online since:

December 2014

Authors:

Helder Souza de Oliveira, Claudio Luis Santos, Viviane Teleginski, Getúlio Vasconcelos

Keywords:

Friction, Hardness, Laser, Thermal Treatment

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