A Numerical and Experimental Study of the RCF Behaviour of PVD-Coated Spur Gears

Abstract:

In this work the rolling contact fatigue (RCF) behaviour of WC/C PVD-coated and uncoated case hardened transmission gears for competition motorcycles was studied both numerically and experimentally. Finite element models of the gears were processed and a theoretical-numerical procedure was applied to the numerical results to predict their RCF life. The presence of the coating and the residual stress fields induced by the surface treatments were simulated. Besides 16NiCr11, which is the actual material of the gears analyzed, the Ti-6Al-4V alloy was also considered with the numerical models. Preliminary RCF tests were carried in both dry and lubricated condition to observe the damage on the tooth flanks with and without the presence of the coating.

• Periodical: Key Engineering Materials (Volumes 452-453)
• Pages: 589-592
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.452-453.589
• Online since: November 2010
• Authors: Sergio Baragetti, Stefano Cavalleri, Federico Tordini
• Keywords: Crack Growth Rate, Numerical Model, PVD Coating, Rolling Contact Fatigue (RCF), Spur Gear

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