The influence of the electrolytic bath on the hard anodizing of diecast Al–Si–Cu alloys

Scampone, Giulia; Russo, Antonio; Carminati, Alessio; Timelli, Giulio

doi:10.1016/j.rsurfi.2022.100089

Results in Surfaces and Interfaces

2022

DOI: 10.1016/j.rsurfi.2022.100089

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The influence of the electrolytic bath on the hard anodizing of diecast Al–Si–Cu alloys

Giulia Scampone

Antonio Russo²,

Alessio Carminati³

et al.

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2024

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Cited by 2 publications

References 17 publications

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Effect of surface roughness and eutectic segregation on anodising of Al-Si-Cu alloys

Scampone,

Timelli

2024

Materials Science and Technology

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To study the influence of the surface roughness and eutectic silicon segregation on the anodising of diecast Al-Si-Cu alloys, an AlSi11Cu2(Fe) alloy was high-pressure diecast and hard anodised. The microstructure and surface topography of milled and grit-blasted regions were investigated to analyse their effect on the growth of the anodic layer. The surface mechanical properties of the anodised surfaces were also studied. The results showed how high surface roughness and silicon segregation present in the grit-blasted surface hindered the thickening of the oxide layer. After anodising, the milled surface exhibited better mechanical properties than the grit-blasted one. The wear resistance was enhanced by a thicker anodic layer, while the scratch resistance was positively affected by a lower surface roughness.

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Effect of surface roughness and eutectic segregation on anodising of Al-Si-Cu alloys

Scampone,

Timelli

2024

Materials Science and Technology

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Hard-Anodized Aluminum Alloy: Wear Properties in Vegetable Oils

Soffritti,

Fortini,

Baroni

et al. 2024

Lubricants

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The present study examines the tribological behavior of an EN AW-4006 aluminum alloy subjected to two innovative hard anodizing processes involving the sealing of anodic oxide pores with Ag+ ions and tested in lubricated conditions. Four plant-based lubricants with different concentrations of fatty acids were considered. Wear tests were conducted using a ball-on-disk tribometer, employing a constant frequency oscillatory motion at 2 Hz and a maximum linear speed of 0.1 m/s. The investigation explores the influence of applied loads (5 N, 10 N, and 15 N) on the resulting coefficient of friction. Through a Design of Experiments methodology, the most influential factors affecting the coefficient of friction are identified. The results indicate that hard anodizing processes and applied load affect the coefficient of friction during wear testing as the main factor of influence. High values of the Unsaturation Number led to a high coefficient of friction at 5 N. Wavy-shaped profile tracks were detected at 10 and 15 N, leading to high specific wear rate values and the failure of the anodized layer.

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The influence of the electrolytic bath on the hard anodizing of diecast Al–Si–Cu alloys

Cited by 2 publications

References 17 publications

Effect of surface roughness and eutectic segregation on anodising of Al-Si-Cu alloys

Effect of surface roughness and eutectic segregation on anodising of Al-Si-Cu alloys

Hard-Anodized Aluminum Alloy: Wear Properties in Vegetable Oils

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