International Journal of Applied Engineering Research

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Corrosion and Metallurgical Properties of Friction Surfaced Materials


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1 Department of Manufacturing Engineering, Annamalai University, India
     

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Mild steel and ferritic stainless steel plates are used for substrate and both pure aluminum and 6352 aluminum alloys rods for coating material, friction surfacing was done. In this investigation deals with pitting corrosion behavior of friction surfaced materials. It was found that pure aluminum were efficiently deposited onto mild steel to form a dense strong coating compared to AA6351 and need comparatively low pressure and speed for coating. It was clearly observed that the circularly pattern appeared on the surface of deposit by the rotation of consumable rods. Microstructure of the deposit was finer than that of the substrate and consumable rod. The softened area was recognized at 3mm distance from the weld interface of substrate. The pitting corrosion test were conducted using gill AC potentiostat in 3.5% (wt %) Nacl solution at different pH values (PH4, PH7, PH11) 1 mole H2SO4 and 1 mole HCL. From pitting corrosion test , tafel graphs, pitting potentials (Epit) , corrosion current density (Icorr), corrosion potential (Ecorr) and open circuit potential (Ocp), were investigated and correlated with microstructure.

Keywords

Friction Surfacing, Coating, Pitting, Deposit, Interface, Consumable Rod
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  • Corrosion and Metallurgical Properties of Friction Surfaced Materials

Abstract Views: 292  |  PDF Views: 0

Authors

V. Sugandhi
Department of Manufacturing Engineering, Annamalai University, India
V. Ravisankar
Department of Manufacturing Engineering, Annamalai University, India

Abstract


Mild steel and ferritic stainless steel plates are used for substrate and both pure aluminum and 6352 aluminum alloys rods for coating material, friction surfacing was done. In this investigation deals with pitting corrosion behavior of friction surfaced materials. It was found that pure aluminum were efficiently deposited onto mild steel to form a dense strong coating compared to AA6351 and need comparatively low pressure and speed for coating. It was clearly observed that the circularly pattern appeared on the surface of deposit by the rotation of consumable rods. Microstructure of the deposit was finer than that of the substrate and consumable rod. The softened area was recognized at 3mm distance from the weld interface of substrate. The pitting corrosion test were conducted using gill AC potentiostat in 3.5% (wt %) Nacl solution at different pH values (PH4, PH7, PH11) 1 mole H2SO4 and 1 mole HCL. From pitting corrosion test , tafel graphs, pitting potentials (Epit) , corrosion current density (Icorr), corrosion potential (Ecorr) and open circuit potential (Ocp), were investigated and correlated with microstructure.

Keywords


Friction Surfacing, Coating, Pitting, Deposit, Interface, Consumable Rod

References