Author(s)

Vikas Chawla, Amita Chawla, D. Puri, S. Prakash, Buta Singh Sidhu

Chemistry Department, Govt. Brijindra College, Faridkot-151203, India.
Dean (Academics), P.T.U., Jalandhar-144001, India.
Mechanical Engineering Department, F.C.E.T. Ferozepur-152002, India.
Metallurgical & Materials Engineering Department, I.I.T. Roorkee -247667, India.

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.

Nanostructured coating, Hot corrosion, Oxide Scale, Physical vapour deposition, Scale morphology.

V. Chawla, A. Chawla, D. Puri, S. Prakash and B. Sidhu, "Performance of Nanostructured Metal Nitride Coated T-22 Boiler Steel in Na₂SO₄–60% V₂O₅ Environment at 900°C under Cyclic Conditions," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 7, 2011, pp. 583-608. doi: 10.4236/jmmce.2011.107045.