Effects of CeO2/Y2O3 rare earth oxides on microstructure and properties of in-situ synthesized WC-reinforced Ni-based cladding layer

  • Cong-xiao Zhang Xi'an University of Science and Technology
  • Wan-chang Sun
  • Er-yong Liu
  • Yu-wan Liu
  • Bo Zhang
  • Meng-ran Zhou
  • Xu Xu
Keywords: Laser cladding, In-situ synthesized, Rare earth, Mechanical properties, Electrochemical properties

Abstract


A novel tungsten carbide (WC)-reinforced nickel (Ni)-based laser cladding layer prepared by in-situ synthesized process. The growth mechanism of the cladding layer was explored. Furthermore, the mechanism of the influence of different concentrations for CeO2/Y2O3 doping on the microstructures, wear and corrosion resistance of in-situ synthesized WC-reinforced Ni-based cladding layer were analyzed. The results revealed that the optimal content of rare earth oxides using the CeO2 content of 0.75% and the Y2O3 content of 1.50%, which exhibit outstanding hardness (660HV0.2) and excellent wear resistance. In addition, the minimum corrosion rate of the coating were 0.002770 mm/a and 0.0022548 mm/a, with the noble Ecorr (-0.12549 V/-0.49924 V) and lower Icorr (2.3550×10-7 A·cm2/1.9170×10-7 A·cm2). The doping of rare earth oxides in the cladding layer excellently enhances the wear and corrosion resistance, which was mainly ascribed to the rare earth oxides have better refining grain and purifying effect on the cladding layer organization.

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Published
2024/08/26
How to Cite
Zhang, C.- xiao, Sun, W.- chang, Liu, E.- yong, Liu, Y.- wan, Zhang, B., Zhou, M.- ran, & Xu, X. (2024). Effects of CeO2/Y2O3 rare earth oxides on microstructure and properties of in-situ synthesized WC-reinforced Ni-based cladding layer. Journal of Mining and Metallurgy, Section B: Metallurgy, 60(1), 139-152. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/47101
Issue
Vol. 60 No. 1 (2024)
Section
Original Scientific Paper

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