naa a22 4500 510769985 CHVBK 20180411083210.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11837-013-0612-5 doi (NATIONALLICENCE)springer-10.1007/s11837-013-0612-5 Degradation Behavior of Nanostructured Coatings Deposited by High-Velocity Arc Spraying Process in an Actual Environment of a Coal-Fired Boiler [Elektronische Daten] [V. Shukla, R. Jayaganthan, V. Tewari] FeCr-based nanostructured coatings were deposited on a 301S stainless steel substrate by the high-velocity arc spraying process in the current work. The oxidation behavior of the coatings exposed to elevated temperatures (700°C and 900°C) under laboratory conditions as well as in an actual industrial environment of a coal-fired boiler (at 700±10°C) was investigated. X-ray diffraction, scanning electron microscopy/energy-dispersive analysis, and transmission electron microscopy techniques were used to characterize the coating as well as to analyze the corrosion products for elucidating the corrosion mechanisms. The microhardness of the coating was found to be 520-1100HV. The (FeCr)-based nanostructured coating showed good adherence to the 310S substrate and excellent oxidation resistance during the exposures with no tendency for spallation of its oxide scales in both environments. The nanosized grain morphology of the coating facilitated the formation of protective scales, which is continuous, adherent, and nonporous due to the higher diffusivity of alloying elements in the coatings. It precludes high-temperature oxidation by acting as a diffusion barrier between the environment and the coating. TMS, 2013 Shukla V. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut Jayaganthan R. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut Tewari V. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut JOM Springer US; http://www.springer-ny.com 65/6(2013-06-01), 784-791 1047-4838 65:6<784 2013 65 11837 https://doi.org/10.1007/s11837-013-0612-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0612-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shukla V. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut NATIONALLICENCE 700 1- Jayaganthan R. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut NATIONALLICENCE 700 1- Tewari V. Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/6(2013-06-01), 784-791 1047-4838 65:6<784 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer