Comparative hot corrosion performance of APS and Detonation sprayed CoCrAlY, NiCoCrAlY and NiCr coatings on T91 boiler steel

• Published in: Corrosion science Vol. 189; p. 109556
• Main Authors: C., Sundaresan, B., Rajasekaran, S., Varalakshmi, K., Santhy, Rao, D. Srinivasa, G., Sivakumar
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 15.08.2021; Elsevier BV
• Subjects: A. Cobalt; A. Metal coatings; A. Nickel; Aluminum oxide; B. SEM; B. XRD; C. Hot corrosion; Chromium oxides; Corrosion resistance; Corrosion resistant steels; Detonation; Heat resistant steels; Hot corrosion; Martensitic stainless steels; Potassium sulfate; Protective coatings; Salt deposits; A. Nickel; B. SEM; B. XRD; A. Metal coatings; A. Cobalt; C. Hot corrosion

•DSC coatings offered better hot corrosion resistance than the APS coatings.•NiCr composition provides excellent corrosion resistance under molten salt enviorment.•Chromia and spinel oxides resisted hot corrosion ingress in coatings.•Lack of SO2 caused lower stability of Alkali iron trisulphates and...