The High-Temperature Oxidation Behavior of the Fe-Ni Based Alloy Coating Produced by Plasma Cladding

Abstract:

In the paper the efficient and low-cost plasma cladding technique has been used to prepare Fe-Ni based alloy coatings on the surface of low carbon steel. The high-temperature isothermal oxidation behavior of the specimens has been tested at 700 °C and 800 °C in air using an electrical furnace for 100 h. The elements distribution, phase composition, and morphology of the alloy coatings after the oxidation test have been characterized by SEM/EDS and XRD. Isothermal oxidation test show that the Fe-Ni based alloy coating has excellent high temperature oxidation resistance at 700 °C and 800 °C. The oxidation rate of Fe-Ni based coating at 800 °C is higher than that of at 700 °C. At 800 °C, the oxidation kinetics basically follows the parabolic rate law before 80 h. A protective Fe_0.99Fe_1.97Cr_0.03Ni_0.01O₄ and Cr_1.3Fe_0.7O₃ based oxide film has been formed on the surface of the coating after oxidation.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 781-785
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.781
• Online since: February 2011
• Authors: Li Min Zhang, Bang Wu Liu
• Keywords: Fe-Ni Based Alloy Coating, High Temperature Oxidation, Oxidation Kinetic, Plasma Cladding

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