INFLUENCE OF POWDER FEED RATE AND FUEL/OXYGEN RATIO IN HVOF ON THE ELECTROCHEMICAL CORROSION BEHAVIOUR OF NICR COATINGS

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FARAHPOUR P.; KHEIRKHAH M.M.; MIRTALEB H.; EDRIS H.

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Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2012 | Volume:- | Issue:16 Page(s): 71-85

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Title

INFLUENCE OF POWDER FEED RATE AND FUEL/OXYGEN RATIO IN HVOF ON THE ELECTROCHEMICAL CORROSION BEHAVIOUR OF NICR COATINGS

Author(s)

FARAHPOUR P. | KHEIRKHAH M.M. | MIRTALEB H. | EDRIS H. | Issue Writer Certificate

Keywords

HIGH VELOCITY OXY-FUEL THERMAL SPRAYQ3

ELECTROCHEMICAL CORROSIONQ2

NICR COATINGQ3

POROSITYQ3

Abstract

In the present study, NICR COATING was created by the High Velocity Oxy-Fuel (HVOF) thermal spray technique under different conditions in respect to powder feed rate and fuel/oxygen ratio on the steel samples. Electro chemical corrosion behaviour of the NiCr coated samples was investigated by the potentiostatic polarization in NaCl 3.5% solution. In order to determine the structural traits of the coatings, scanning electron microscopy (SEM/EDX) was used before and after the corrosion testing. The analysis of the results indicates that the fuel/oxygen and the powder feed rate have a significant effect on the POROSITY, existing oxide phases, and corrosion resistance, and un/melted powders of these coatings. corrosion behaviour of the sample, which has coated by fuel/oxygen of 1.25 and powder feed rate of 18 gr/min, is the best due to lower POROSITY and oxide zones.

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APA: Copy

FARAHPOUR, P., KHEIRKHAH, M.M., MIRTALEB, H., & EDRIS, H.. (2012). INFLUENCE OF POWDER FEED RATE AND FUEL/OXYGEN RATIO IN HVOF ON THE ELECTROCHEMICAL CORROSION BEHAVIOUR OF NICR COATINGS. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, -(16), 71-85. SID. https://sid.ir/paper/120964/en

Vancouver: Copy

FARAHPOUR P., KHEIRKHAH M.M., MIRTALEB H., EDRIS H.. INFLUENCE OF POWDER FEED RATE AND FUEL/OXYGEN RATIO IN HVOF ON THE ELECTROCHEMICAL CORROSION BEHAVIOUR OF NICR COATINGS. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2012;-(16):71-85. Available from: https://sid.ir/paper/120964/en

IEEE: Copy

P. FARAHPOUR, M.M. KHEIRKHAH, H. MIRTALEB, and H. EDRIS, “INFLUENCE OF POWDER FEED RATE AND FUEL/OXYGEN RATIO IN HVOF ON THE ELECTROCHEMICAL CORROSION BEHAVIOUR OF NICR COATINGS,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. -, no. 16, pp. 71–85, 2012, [Online]. Available: https://sid.ir/paper/120964/en

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