Durability and Corrosion of Aluminium and Its Alloys: Overview, Property Space, Techniques and Developments

L., N.; Birbilis, Nick; Hughes, Alison; Mol, J.M.C.; J., S.; Zhou, Xiaorong; E., G.

doi:10.5772/53752

Cited by 37 publications

(14 citation statements)

References 234 publications

(108 reference statements)

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“…It is well known that the addition of Si in conjunction with Mg, which is typical in AA6xxx series of Al alloys, allows Mg 2 Si particles to precipitate. There is also a lot of literature data on the role of chemical composition on forming the Mg-Si phase and its influence on mechanical properties [2,[25][26][27]. These particles are beneficial in terms of increasing strength, but as shown in recent investigations, that Mg 2 Si remained more 'anodic' than the matrix in Al-alloys.…”

Section: Fig 3potentiodynamic Polarization Diagrams Of Tested (A) Amentioning

confidence: 99%

“…This protective oxide layer is especially stable in near-neutral solutions of most non-halide salts leading to excellent pitting resistance. Nevertheless, in open-air solutions containing halide ions, with Cl -ion being the most common, aluminum is susceptible to pitting corrosion [1,2]. This process is related to the presence of oxygen, and the metal is readily polarized to its pitting potential, and because chlorides contribute to the formation of soluble chlorinated aluminum-hydroxide which interferes with the formation of the stable oxide on the aluminum surface [2].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, in open-air solutions containing halide ions, with Cl -ion being the most common, aluminum is susceptible to pitting corrosion [1,2]. This process is related to the presence of oxygen, and the metal is readily polarized to its pitting potential, and because chlorides contribute to the formation of soluble chlorinated aluminum-hydroxide which interferes with the formation of the stable oxide on the aluminum surface [2]. The composition of the aluminum-rich solid solution, which constitutes the predominant volume fraction and area fraction of the microstructure, determines the corrosion potential of an aluminum alloy in a given environment.…”

Section: Introductionmentioning

confidence: 99%

“…Alloying elements are added to aluminum for various reasons with improving mechanical properties as the principal reason. These elements introduce heterogeneity into the microstructure, which is the main cause of localized corrosion that initiates in the form of pitting, and each alloying element has a different effect on the corrosion of aluminum [2]. These microstructural heterogeneities frequently have corrosion potentials differing from that of the solid solution matrix resulting in local (micro-) galvanic cells and it which can be experimentally quantified [1,[3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

Delijić¹,

Markoli²,

Naglič³

2014

Metall Mater Eng

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Paper presents the results on the corrosion behavior of some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn alloys in their final commercially usable tempered state. Durability of alloys was quantified and compared in the sense of corrosion rates in aqueous solutions while also having in mind the role of alloy chemistry. Open circuit corrosion potential (OCP) measurements, linear polarization and potentiodynamic anodic/cathodic polarization was employed in order to determine the corrosion behavior of samples in the mixture of chloride ions containing aqueous corrosion ambient. We found out that AlFe0.83Si0.18(AA8079), AlMg0.63Si0.72 (AA6005) and AlMg4Mn (AA5182) alloy exhibited the highest rates of passivation in 0.51 mol NaCl solution. The group of Al-Fe-Si alloys exhibited the greatest sensitivity to the changes in chemical composition under potentiodynamic polarization. Artificially aged Al-Mg-Si extruded profiles and fully annealed (after cold rolling) Al-Mg-Mn sheets exhibit very similar levels of equilibrium potentials E (I=0) in 0.51 mol NaCl solution. In the case of Al-Fe-Si alloys, we found that Fe/Si ratio also plays an important role, next to the total content of Fe and Si. Alloys with high Fe/Si ratios showed almost 30 % lower polarization resistance compared to the alloys with balanced Fe/Si, even in the case of the equal total content of alloying elements. The AlMg0.7Si1.2Mn0.8 alloy aged after quenching in the sprayed water and AlMg4Zn1.3Mn0.4 annealed sheet exhibit very similar levels of corrosion rates in 0.51 mol NaCl solution.

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Section: Fig 3potentiodynamic Polarization Diagrams Of Tested (A) Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

Delijić¹,

Markoli²,

Naglič³

2014

Metall Mater Eng

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“…Amorphous and nanocrystalline Al-Fe alloys (90 at% Al) are promising structural and functional materials due to excellent properties combination-low density, high melting point, good wear resistance, high temperature strength and high resistance to creep and oxidation [1][2][3]. In particular, Al-Fe alloys had expanded their application as functional materials for electrochemistry and magnetoactive systems [4]. The development of ternary systems Al-Fe-TM(RE), where TM-transition and RE is rare earth metals, allows the obtaining of nanostructure alloys with improved properties, for instance, with high strength.…”

Section: Introductionmentioning

confidence: 99%

Thermally induced phase transformations of Al₉₃Fe₄Nb₃ and A_l90Fe₇Nb₃ quenched alloys

Shved

Mudry

Kotsyubynsky

et al. 2020

Mater. Res. Express

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Al-based rapidly quenched alloys of composition Al 90 Fe 7 Nb 3 and Al 93 Fe 4 Nb 3 were studied by Mӧssbauer spectroscopy, X-ray powder diffraction and differential scanning calorimetry methods. The occurrence of thermally induced phase transformations has been established. It is shown that both ribbons reveal the structure in which Fe-atoms have an aluminum ones neighbors both in amorphous and annealed up to 653 K that corresponds to the atomic arrangement in Al 6 Fe metastable phase. At higher than 709.6 K annealing temperatures the structural transformations of this phase into mix of stable Al 13 Fe 4 compound and aluminium were observed and at 893 K these transformations were completed.

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Surface Modification of LiNi_0.8Co_0.15Al_0.05O₂ Particles via Li₃PO₄ Coating to Enable Aqueous Electrode Processing

et al. 2020

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The successful implementation of an aqueous-based electrode manufacturing process for nickel-rich cathode active materials is challenging due to their high water sensitivity. In this work, the surface of LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) was modified with a lithium phosphate coating to investigate its ability to protect the active material during electrode production. The results illustrate that the coating amount is crucial and a compromise has to be made between protection during electrode processing and sufficient electronic conductivity through the particle surface. Cells with water-based electrodes containing NCA with an optimized amount of lithium phosphate had a slightly lower specific discharge capacity than cells with conventional Nmethyl-2-pyrrolidone-based electrodes. Nonetheless, the cells with optimized water-based electrodes could compete in terms of cycle life. the active material by applying surface coatings seems to be very promising. [6-11,16] LiNiCoAlO 2 (NCA) has attracted significant attention as a cathode active material because of its high energy density. [17] However, NCA is known to be extremely sensitive to moisture, [15,18-20] making it a difficult candidate for the aqueous electrode processing. According to the results in the literature, it is assumed that aqueous processing of NCA will not be successful without additional surface modifications, prior to electrode fabrication [10,11] or in situ surface modification during processing [8,9] or in a combination of both. [21] The strong PÀ O-bonding energy in the PO 4 3À ion gives metal phosphates high structural stability against chemical attack. [22-24] Various phosphate coatings such as Ni 3 (PO 4) 2 , [25] FePO 4 , [26] LiMnPO 4 , [27] MgHPO 4 , [28] BiPO 4 , [29] Li 1.3 Al 0.3 Ti 1.7 (PO 4) 3 , [30] Li 3 PO 4 , [23,31] Co 3 (PO 4) 2 , [32,33] LiFePO 4 , [34] and AlPO 4 [31,33,35] have been studied on NCA and resulted in improved electrochemical performance. However, to the best of the authors' knowledge, a phosphatecoated NCA has never been used in a combination with a waterbased electrode manufacturing process. Amongst the phosphate coatings mentioned above, Li 3 PO 4 is relatively easy to synthesize and, in contrast to other metal phosphates such as Ni 3 (PO 4) 2 , Co 3 (PO 4) 2 , BiPO 4 , FePO 4 , MgHPO 4 , and AlPO 4, a lithium-ion conductor. [36,37] The latter aspect might comparatively facilitate the migration of lithium ions through the particles surface. Therefore, in this study, the surface of LiNi 0.8 Co 0.15 Al 0.05 O 2 particles was modified by applying Li 3 PO 4 coatings via a simple precipitation reaction. The modified particles are compared with pristine NCA in terms of their processability in water and their electrochemical performance in cells. Finally, the cycle stability of cells with electrodes prepared via an aqueous and the conventional NMP route as reference is investigated.

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Durability and Corrosion of Aluminium and Its Alloys: Overview, Property Space, Techniques and Developments

Cited by 37 publications

References 234 publications

The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

Thermally induced phase transformations of Al₉₃Fe₄Nb₃ and A_l90Fe₇Nb₃ quenched alloys

Surface Modification of LiNi_0.8Co_0.15Al_0.05O₂ Particles via Li₃PO₄ Coating to Enable Aqueous Electrode Processing

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Durability and Corrosion of Aluminium and Its Alloys: Overview, Property Space, Techniques and Developments

Cited by 37 publications

References 234 publications

The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

The Influence of the Chemical Composition on the Corrosion Performances of Some Al-Fe-Si, Al-Mg-Si and Al-Mg-Mn Type of Alloys

Thermally induced phase transformations of Al93Fe4Nb3 and Al90Fe7Nb3 quenched alloys

Surface Modification of LiNi0.8Co0.15Al0.05O2 Particles via Li3PO4 Coating to Enable Aqueous Electrode Processing

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Product

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Thermally induced phase transformations of Al₉₃Fe₄Nb₃ and A_l90Fe₇Nb₃ quenched alloys

Surface Modification of LiNi_0.8Co_0.15Al_0.05O₂ Particles via Li₃PO₄ Coating to Enable Aqueous Electrode Processing