Microstructure and Properties of Fe Base Coatings Reinforced by In Situ TiC Particles Using Plasma Jet Surface Metallurgy

Abstract:

By plasma jet surface metallurgy, the thick composite coatings reinforced by in-situ TiC were produced on low carbon steel. Composition, microstructures and performance were characterized by scanning electron microscope (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), micro-hardness tester and wear tester. The results showed that the excellent bonding between the coating and the carbon steel substrate was achieved by strong metallurgical interface. The microstructure of the coating is mainly composed of γ-(Fe, Ni) dendrite, M₂₃C₆, CrB and in-situ synthesized TiC ceramic particle. Because of the particulate reinforcement, the dispersion strengthening, refinement strengthening, micro-hardness and wear resistant of Fe-based coating can be enhanced.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 677-682
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.677
• Online since: March 2016
• Authors: Hao Chen*, Yang Rong Zhang, Zhu Huang
• Keywords: In Situ TiC, Microstructure, Plasma Jet Surface Metallurgy, Wear Resistance

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