Characteristics of Laser Cladded Nickel-Based Chromic Carbide Composite Coatings

Abstract:

To improve the surface hardness and wear resistance of metal parts. Ni-based chromic carbide composite coating was prepared on the carbon steel (0.45 mass% C) substrates by laser cladding. Microstructure and wear properties of composite coatings were investigated by SEM, EDS, XRD, Vickers micro-hardness tester and wear machine. The results show that good metallurgical bonding between the Ni-based chromic carbide composite coating and carbon steel substrate. Micro-hardness of Ni-based Cr₃C₂ composite coating along the layer depth presents an evident stepladder distribution. The average micro-hardness of the laser clad coating is about 950 HV. The result of wear experiment shows that Ni-based Cr₃C₂ composite coating processes good wear resistance.

• Periodical: Materials Science Forum (Volume 893)
• Pages: 340-344
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.893.340
• Online since: March 2017
• Authors: Sheng Dai, Dun Wen Zuo*, Xian Rui Zhao, Jin Fang Wang
• Keywords: Chromic Carbide, Laser Clad, Nickel-Based Composite Coating, Tribological Property

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