Friction and Wear Characteristics of Laser-Clad Nano-Lubricating Coating

Abstract:

Nickel-based nano self-lubricating coatings were deposited on medium carbon steel by laser. The microstructure and tribological properties of the typical coating containing 10wt % nano-hBN powders were investigated using SEM incorporating EDS, and high temperature tribo-tester, respectively. It was found that the cladding layer and substrate was good metallurgical bonding. Dry sliding frictional tests suggested that the composite coating containing about 10wt % hBN powders has lower friction coefficient than that of pure Ni60 cladding at room temperature with a load of 40N and a speed of 2m/s, as well as 400°C with a load of 20N and a speed of 2m/s. The wear resistance of Ni60-hBN coating is about 10 times than that of Ni60 coating. The SEM analysis of the abrasion morphology found that wear mechanism of self-solid lubrication coating was adhesive wear, and wear mechanism of the cladding layer of non-lubricant was adhesive wear with abrasive wear.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 421-424
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.421
• Online since: April 2010
• Authors: Wen Yan Wang, J. Xu, Jing Pei Xie, H. Yan, A.H. Wang
• Keywords: Laser Cladding, Microstructure, Self-Lubricating Coating, Wear Resistance

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