Tribological and mechanical properties of AA6061 reinforced with SiC and graphite for automobile applications

Padmavathy, S.; Kamalakannan, R.; Manikandan, A.

doi:10.1016/j.matpr.2019.05.354

Cited by 9 publications

(2 citation statements)

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“…before and after aging. The treated nanosamples had a more uniform nanostructure distribution 38 , 39 , 43 (Fig. 3 ) and improved electrochemical characteristics by regulating charge transfer on the composite surface.…”

Section: Resultsmentioning

confidence: 99%

Corrosion suppression and strengthening of the Al-10Zn alloy by adding silica nanorods

AbdElRhiem,

Barakat,

Abdelaziz

et al. 2024

Sci Rep

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Aluminum alloys have been widely studied because of their current engineering applications. Due to their high strength and lightweight, cracking can easily initiate on their surface, deteriorating their overall functional and structural properties and causing environmental attacks. The current study highlights the significant influence of incorporating 1 wt% silica nanostructure in aluminum-10 zinc alloys. The characteristics of the composites were examined using Vickers hardness, tensile, and electrochemical testing (OCP, Tafel, and EIS) at various artificial aging temperatures (423, 443, and 463 K). Silica nanorods may achieve ultrafine grains, increase hardness by up to 13.8%, increase σUTS values by up to 79% at 443 K, and improve corrosion rate by up to 89.4%, surpassing Al-10 Zn bulk metallics. We demonstrate that silica nanorods contribute to the creation of a superior nanocomposite that not only limits failure events under loading but also resists corrosion. Our findings suggest that silica nanocomposite can produce unique features for use in a variety of automotive, construction, and aerospace applications. This improvement can be attributed mainly to the large surface area of nano-silica particles, which alters the Al matrix. Microstructural, mechanical, and electrochemical studies revealed that the effects of structure refinement were dependent on nano-silica.

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Section: Resultsmentioning

confidence: 99%

Corrosion suppression and strengthening of the Al-10Zn alloy by adding silica nanorods

AbdElRhiem,

Barakat,

Abdelaziz

et al. 2024

Sci Rep

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“…8 ) 16 , 36 . Furthermore, there is a direct relationship between the addition of hard particles (CuO nanostructure, for instance) to the alloy and the grain size diameter, which is related to the improvement of the electrochemical and mechanical properties due to the uniform distribution of CuO nanostructure 20 , 37 , 38 . Raising the aging temperatures for both A 1 and A 2 reduces the corrosion rate.…”

Section: Resultsmentioning

confidence: 99%

Corrosion behavior and microstructure of Al–10Zn alloy with nano CuO addition

AbdElRhiem,

Mohamed,

Barakat

et al. 2023

Sci Rep

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The present study explores the preparation of Al–10wt.%Zn alloy by the casting process. Nano CuO was prepared by the Co-precipitation method. The effect of adding nanostructure of (1wt.% CuO) to Al–10Zn alloy was studied the corrosion effects as-cast and with different aging temperatures (423, 443, and 463 K) for 2 h in 3.5% NaCl aqueous solution after homogenized for 2 h at 500 K at room temperature. Electrochemical measurements (OCP, Tafel, and EIS) were performed to determine the corrosion rate (C.R.) and corrosion current density (Icorr.) to find out corrosion behavior. In addition, microstructures of Al–10Zn and Al–10Zn–1CuO were observed using a scanning electron microscope, EDX mapping, and the optical microscope to investigate the effect of the nanoparticle’s addition before and after aging and the corrosion test. The average crystal size and the dislocation density were calculated from the XRD pattern. The results show that the appropriate addition of CuO nanoparticles can refine the Al–10Zn alloy and shift the Al–10Zn alloy to a more noble direction.

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