Corrosion behaviour of 6063 aluminium alloy in acidic and in alkaline media

Prabhu, Deepa; Rao, Padmalatha

doi:10.1016/j.arabjc.2013.07.059

Cited by 129 publications

(65 citation statements)

References 29 publications

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“…The rate of corrosion of aluminum metal in alkaline water was in line with a concentration of the solution and temperature (Deepa and Rao, 2013). Hydrogen gas and aluminium hydroxide can produce from aluminium with water (previous reaction).…”

Section: Introductionmentioning

confidence: 85%

The Design of ACE (Aluminum Corrosion and Electrolysis) Reactor and Its Performance to Produce Hydrogen from Beverage Cans

Zikri

Erlinawati

Trisnaliani

et al. 2018

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The reaction of aluminum (Al) INTRODUCTIONHydrogen is a promising alternative energy for carbon-based fuel substitution. The advantages of hydrogen fuel are free emissions of COx and SOx and its high heating value (HHV = 142 MJ/kg and LHV = 120.2 MJ/kg) or about three times higher than the heating value of gasoline. Gutbier and Hohne (1976) attempted to produce hydrogen through a reaction between magnesium-aluminum and seawater. Soler et al. (2005) reported the reaction of aluminum powder with sodium hydroxide solution (NaOH) produced an optimum yield of hydrogen at temperature of 70-90 o C. However, higher yield was obtained in reacting aluminum with sodium aluminate (NaAlO2) than that of NaOH solution (Soler et al., 2009).

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Section: Introductionmentioning

confidence: 85%

The Design of ACE (Aluminum Corrosion and Electrolysis) Reactor and Its Performance to Produce Hydrogen from Beverage Cans

Zikri

Erlinawati

Trisnaliani

et al. 2018

Reaktor

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“…[24][25][26] Thus, the microstructural state of an agehardenable alloy is also important in defining its corrosion characteristics. Several earlier researchers [5,8,9,[27][28][29] have focused on a number of issues regarding the corrosion of heat treatable alloys. However, a comparative study on the corrosion behavior of different microstructural states is limited in the existing literature.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of under‐, peak‐, and over‐aged 6063 alloy: A comparative study

Sekhar

Das

2019

Materials & Corrosion

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The mechanical property of age‐hardenable Al‐alloys is governed by the state of ageing, which determines the microstructure and consequently, their corrosion behavior which is a vital aspect for a number of applications. This article presents a comparative assessment of corrosion behavior of under‐, peak‐ and over‐aged Al‐Mg‐Si alloy. Corrosion characteristics have been determined via immersion tests in 0.1 M ortho‐phosphoric acid solution and intergranular corrosion (IGC) tests. Corroded surfaces are examined by field emission scanning electron micrographs‐energy dispersive spectroscopy and 3D optical profilometer. The obtained results reveal that the corrosion rate at a specific immersion time as well as the depth of IGC increases in the order for under‐, peak‐, and over‐aged states. Irrespective of the state of ageing, corrosion loss increases linearly but the rate of corrosion decreases rapidly with increasing immersion time. The dominant mode of corrosion in under‐aged alloy is identified as localized pitting, while peak‐aged is highly susceptible to IGC in contrast extensive pitting corrosion is observed for over‐aged alloy. The observed differences in corrosion behavior are explained considering characteristics of precipitates. Formation of β (Mg2Si) in case of over‐aged alloy and presence of inclusions like AlFeMnSi particles are found to accelerate pitting corrosion.

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“…Bu pH aralığı dışındaki ortamlarda ise Al 2 O 3 tabakasının sürekliliği bozulur ve alüminyum alaşımlarında korozyona bağlı hasarlar oluşur. Özellikle HCl ve H 2 SO 4 içeren ortamlar alüminyum alaşımları için oldukça tehlikelidir [14][15][16].…”

Section: Introductionunclassified

Aa6063 Alümi̇nyum Alaşiminin H2so4 Ortamindaki̇ Korozyon Davranişina Yaşlandirma Süresi̇ni̇n Etki̇si̇

Kısasöz¹

2018

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZAA6063 alaşımı hafiflik, mekanik dayanım ve korozyon direnci gibi özellikleri bir arada bulundurması nedeniyle yaygın bir kullanıma sahiptir. Özellikle bu alaşımlara uygulanan çökelme sertleşmesi işlemiyle, mekanik özelliklerde önemli artışlar meydana gelmektedir. Ancak çökelme sertleşmesi işlemi alaşımın korozyon direncini düşürmektedir. Bu çalışmada, AA6063 alaşımı 200˚C'de 2, 4 ve 8 saat yaşlandırılmış ve yaşlandırılan numunelerin farklı oranlarda H 2 SO 4 içeren (%2, %4, %6) ortamlardaki korozyon davranışları araştırılmıştır. Numunelerin korozyon davranışı, ağırlık kayıplarının incelenmesiyle belirlenmiştir. Ayrıca sertlik ölçümleriyle, yaşlandırma işleminin mekanik özellikler üzerindeki etkisi incelenmiştir. Korozyon testleri sonucunda yaşlandırma süresi arttıkça korozyon oranının arttığı, özellikle 8 saat yaşlandırılan numunenin %6 H 2 SO 4 içeren çözeltide yüksek oranda korozyona uğradığı belirlenmiştir.Anahtar Kelimeler: AA6063 alüminyum alaşımı, ısıl işlem, korozyon EFFECT OF AGING TIME ON THE CORROSION PROPERTIES OF AA6063 ALUMINIUM ALLOY IN H 2 SO 4 ENVIRONMENT ABSTRACTAA6063 aluminium alloy has been widely used due to its combined properties as lightness, mechanical strength, and corrosion resistance. Especially, precipitation hardening process enhances the mechanical properties of the aluminium alloys. Also, precipitation hardening process reduces the corrosion resistance of the aluminium alloys. In this study, aging treatments are applied to AA6063 aluminium alloy at 200˚C for 2, 4 and 8 hours and corrosion behaviour of aged samples is investigated in H 2 SO 4 solutions with various H 2 SO 4 ratio (2%, 4%, 6%). Corrosion behavior of the specimens is determined by measuring the weight loss. Moreover, the effect of aging treatment on mechanical properties is investigated with hardness measurements. As a result of the corrosion tests, it is determined that the corrosion rate increases as the aging time increase, especially the sample aged for 8 hours has the greater corrosion loss in the solution containing 6% H 2 SO 4 .

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Corrosion behaviour of 6063 aluminium alloy in acidic and in alkaline media

Cited by 129 publications

References 29 publications

The Design of ACE (Aluminum Corrosion and Electrolysis) Reactor and Its Performance to Produce Hydrogen from Beverage Cans

The Design of ACE (Aluminum Corrosion and Electrolysis) Reactor and Its Performance to Produce Hydrogen from Beverage Cans

Corrosion behavior of under‐, peak‐, and over‐aged 6063 alloy: A comparative study

Aa6063 Alümi̇nyum Alaşiminin H2so4 Ortamindaki̇ Korozyon Davranişina Yaşlandirma Süresi̇ni̇n Etki̇si̇

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