Pitting Corrosion of Cast Metallurgy Aluminum-Beryllium Alloys in Sulfuric Acid Solutions

Prater, Walter L.

doi:10.5006/1.3278488

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…Because the penetration of chloride ions is too strong, the ions are prone to be adsorbed near the active spots on the defective area of oxide film. The adsorbed ions and the cations can form coordination compounds to promote the dissolution of metal ions, where pitting initiations will come into being [9], [10]. When the pitting nucleation grows up to a certain size, the oxygen concentration cells will form because the oxygen concentration inside the spot corrosion hole is less than the concentration outside the spot corrosion hole.…”

Section: Pitting Corrosionmentioning

confidence: 99%

Failure Analysis of Aircraft Aluminum Alloy Structures in Coastal Environments

Pan

Jiang²,

Jin

et al. 2012

AMR

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The failure of aluminum alloy stringer on the tour airplane servicing in the coastal environment of the Fiji Islands were analyzed. Through the analysis of surface topographies and failure characteristics and the consideration of service environment, the evolvement of failure process and the failure mechanisms were analyzed. Findings showed that ultraviolet radiation, temperature, high-humidity and salt spray caused the aging failure of structure coating and then pitting corrosion occurred in the oxide film on aluminum alloy. With the ongoing corrosion along the grain boundary, intergranular corrosion appeared. When the intergranular corrosion continued developing to the adjacent layers, denudation occurred. The volume expansion effect of corrosion products caused the stress concentration on the tip of corroded area and resulted in the initiation of cracks.

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Section: Pitting Corrosionmentioning

confidence: 99%

Failure Analysis of Aircraft Aluminum Alloy Structures in Coastal Environments

Pan

Jiang²,

Jin

et al. 2012

AMR

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“…In other cases the minimum fluctuations of OCP indicates the minimum availability of surface defect sites for pit initiation. A partial step for the initiation of pits is the penetration of Clions in the oxide film preferentially at the defect sites on Al alloy [66][67][68][69] , which favors the deformation of protective film such as Al…”

Section: Open Circuit Potentialmentioning

confidence: 99%

Effect of cathodic charging on Al-32Si-2Cu alloy in acidic solution

et al. 2010

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Samples of Al-32Si-2Cu intermetallic was subjected to electrochemical cathodic charging and corrosion test in hydrochloric acid (HCl) solution of concentrations ranging from 0.1 to 3.0 M. The influence of cathodic charging current density and time on changing the surface morphology, phase transformation, compositions, and fracture mode has been investigated using X-ray diffraction (XRD) and scanning electron microscope (SEM) coupled with energy dispersive spectroscopy (EDS). A considerable drop in Vickers microhardness value with increasing cathodic charging time of the specimen was observed. Electrochemical polarization facilitates the formation of simple and mixed salt (AlCl3, Al5Cl3(OH)12.2H2O) over the alloy surface by chloride inclusion in the major corrosion product of hydroxides or oxides of Al

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Achieving ultra-high strength in Be/Al composites by self-exhaust pressure infiltration and hot extrusion process

Kuang

Yang

et al. 2023

Materials Science and Engineering: A

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Pitting Corrosion of Cast Metallurgy Aluminum-Beryllium Alloys in Sulfuric Acid Solutions

Cited by 5 publications

References 1 publication

Failure Analysis of Aircraft Aluminum Alloy Structures in Coastal Environments

Failure Analysis of Aircraft Aluminum Alloy Structures in Coastal Environments

Effect of cathodic charging on Al-32Si-2Cu alloy in acidic solution

Achieving ultra-high strength in Be/Al composites by self-exhaust pressure infiltration and hot extrusion process

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