Friction and Wear Properties of Laser Cladding Coatings under Boundary Lubrication Conditions

Abstract:

AISI 1045 steels were laser-clad with Ni-based powder by CO2 HJ-4 coherent laser. The phase composition of the laser-cladding coating was investigated by means of X-ray diffraction (XRD). The cross-section of the cladding coating was observed using a scanning electron microscopy (SEM). The friction and wear properties of the laser cladding coatings sliding against AISI 52100 steel under the lubrication of liquid paraffin containing various anti-wear and extreme pressure additives were investigated using an Optimol SRV reciprocating motion friction and wear tester. Results showed that the laser-cladding coating considerably decreased coefficient of friction and increased wear resistance in sliding against AISI 52100 steel and attributed to the change in the hardness, phase composition of the laser-cladding coating and tribochemical reactions between the laser-cladding coating and the extreme pressure and anti-wear additives.

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 143-146
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.143
• Online since: August 2011
• Authors: Xin Feng, Yan Qiu Xia
• Keywords: Extreme Pressure and Anti-Wear Additives, Friction, Laser Cladding Coating, Wear, XRD and XPS Analysis

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