The High-Temperature Oxidation Behavior of the Fe-Ni Based Alloy Coating Produced by Plasma Cladding
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 Fe0.99Fe1.97Cr0.03Ni0.01O4 and Cr1.3Fe0.7O3 based oxide film has been formed on the surface of the coating after oxidation.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
L. M. Zhang and B. W. Liu, "The High-Temperature Oxidation Behavior of the Fe-Ni Based Alloy Coating Produced by Plasma Cladding", Advanced Materials Research, Vols. 189-193, pp. 781-785, 2011