Abstract
The nickel–iron–chromium (alloy 20) is enriching by hybrid surface treatment through plasma nitride (PN) and physical vapor deposition (PVD) process. The plasma nitriding process takes 12 h at 500 °C. Potentiodynamic testing is used to characterize the corrosion performance of the treated material, followed by morphological analysis of the exposed surface; XRD, EDX, SEM, hardness, and tensile testing are used to investigate appropriate coating properties. Plasma nitride and hybrid PVD nickel–iron–chromium alloys exhibit perlite (γ + α′) phases and martensite (γ + α) phases, respectively. The martensite microstructure ensures superior tensile strength and hardness. The pin-on-disc tribometer test proposes to analyze friction and hard-faced behavior in the dry sliding position. The inclusion of Si improves the adherent oxide film, resulting in a low wear rate in TiAlSiN alloy 20. Due to the presence of the passive film, TiAlSiN alloy 20 exposes the most passive region to attain better corrosion resistance.Graphical Abstract
Highlights
Nickel (Ni) - Iron (Fe) –Chromium (Cr) alloy (Alloy 20) is highly desirable for use in aggressive chemical environments with excellent mechanical properties due to its composite properties
The diffractogram for the plasma nitriding alloy 20 are significantly changed from the basic specimens
Oxidative peaks are dissolved during TiAlN POPVD evaporation processes in the PREPN process
Summary
S Karthik Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology.
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