Performance of Nanostructured Metal Nitride Coated T-22 Boiler Steel in Na2SO4–60% V2O5 Environment at 900°C under Cyclic Conditions


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.

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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.

Conflicts of Interest

The authors declare no conflicts of interest.


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