Evaluations of Hot Corrosion Behavior of Al2O3 Thermal Spray Coatings with ZrO2 Reinforcements on T-91 Steel

doi:10.13189/ujme.2019.070411

Journals Information

Universal Journal of Mechanical Engineering Vol. 7(4), pp. 224 - 230
DOI: 10.13189/ujme.2019.070411
Reprint (PDF) (576Kb)

Evaluations of Hot Corrosion Behavior of Al₂O₃ Thermal Spray Coatings with ZrO₂ Reinforcements on T-91 Steel

Indermeet Singh ¹, Khushdeep Goyal ¹^,*, Rakesh Goyal ²
¹ Department of Mechanical Engineering, Punjabi University, Patiala, India
² Chitkara Institute of Engineering and Technology, Chitkara University, Punjab, India

ABSTRACT

Different coating with varying quantities of Al₂O₃ and ZrO₂ were fabricated on the SA213 T-91 steel using plasma spray method to study hot corrosion resistance behavior. Experiment was conducted under the molten salt environment of 60% Na₂SO₄-40%V₂O₅ at a temperature of 900℃ inside a furnace for 50 cycles. Each cycle consisted of 1hr heating and 20 min cooling at room temperature. Results were examined using the visual inspection, weight change measurement, X-ray diffraction technique and Scanning Electron Microscopy/ Energy Dispersive X-Ray Spectroscopy (SEM/ EDS) analysis. Results showed that uncoated T-91 steel was more prone to hot corrosion as compared to coated steel specimens. It was noticed that ZrO₂ reinforcements in Al₂O₃ coating matrix helped to enhance corrosion resistance of these coatings. The corrosion resistance increased with increase in ZrO₂ content in coating matrix.

KEYWORDS
Plasma Spray, ZrO₂ Coating, Al₂O₃ Coating, Porosity, Boiler Steel

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Indermeet Singh , Khushdeep Goyal , Rakesh Goyal , "Evaluations of Hot Corrosion Behavior of Al₂O₃ Thermal Spray Coatings with ZrO₂ Reinforcements on T-91 Steel," Universal Journal of Mechanical Engineering, Vol. 7, No. 4, pp. 224 - 230, 2019. DOI: 10.13189/ujme.2019.070411.

(b). APA Format:
Indermeet Singh , Khushdeep Goyal , Rakesh Goyal (2019). Evaluations of Hot Corrosion Behavior of Al₂O₃ Thermal Spray Coatings with ZrO₂ Reinforcements on T-91 Steel. Universal Journal of Mechanical Engineering, 7(4), 224 - 230. DOI: 10.13189/ujme.2019.070411.