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Performance of Nanostructured Metal Nitride Coated T-22 Boiler Steel in Na<sub>2</sub>SO<sub>4</sub>–60% V<sub>2</sub>O<sub>5</sub> Environment at 900°C under Cyclic Conditions
Mechanical Engineering Department, F.C.E.T. Ferozepur-152002, India
Chemistry Department, Govt. Brijindra College, Faridkot-151203, India
Metallurgical & Materials Engineering Department, I.I.T. Roorkee -247667, India
Metallurgical & Materials Engineering Department, I.I.T. Roorkee -247667, India
Dean (Academics), P.T.U., Jalandhar-144001, India
- 1 Mechanical Engineering Department, F.C.E.T. Ferozepur-152002, India
- 2 Chemistry Department, Govt. Brijindra College, Faridkot-151203, India
- 3 Metallurgical & Materials Engineering Department, I.I.T. Roorkee -247667, India
- 4 Metallurgical & Materials Engineering Department, I.I.T. Roorkee -247667, India
- 5 Dean (Academics), P.T.U., Jalandhar-144001, India
Journal of Minerals and Materials Characterization and Engineering·Volume 10 (2011)·Pages 583–608·Published 6 June 2011·DOI10.4236/jmmce.2011.107045
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Abstract
In this work, TiAlN and AlCrN coatings were deposited on ASTM-SA213-T-22 boiler steel using Balzer’s rapid coating system (RCS) machine (make Oerlikon Balzers, Swiss) under a reactive nitrogen atmosphere. Cyclic oxidation studies in molten salt environment were conducted at 900°C temperature in the laboratory using silicon carbide furnace. The weight gain was measured after each cycle and visually examined the surface morphology of the oxidized samples was studied using FE-SEM with EDAX attachment and XRD analysis. The results obtained showed the better performance of TiAlN coated T-22 boiler steels than the AlCrN coated and uncoated T-22 boiler steel.
KeywordsNanostructured coatingHot corrosionOxide ScalePhysical vapour depositionScale morphology.
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