Corrosion of AA 7075 Aluminum Alloy in Media Contaminated with<i>Cladosporium resinae</i>

Ayllón, E. S.; Rosales, B.M.

doi:10.5006/1.3584977

Cited by 20 publications

(3 citation statements)

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“…In contrast, the corrosion of AA 7075 has been evaluated in the presence of fungi Cladosporium resinae [24] and bacteria. Hagenauer et al [25] in a joint project of different European aircraft manufacturers studied the involvement of microorganisms in aircraft corrosion damage.…”

Section: Mic Related To Aluminum Alloy 2024 and 7075mentioning

confidence: 99%

Microbiologically Influenced Corrosion in Aluminium Alloys 7075 and 2024

Nelson¹,

Maria²,

Mamiè³

et al. 2017

Aluminium Alloys - Recent Trends in Processing, Characterization, Mechanical Behavior and Applications

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Aluminum and its alloys are central materials for the aircraft industry. Aluminum alloys (AA) 7075 and 2024 are widely used both in the structures and in brittle sections of the airplanes. The presence of the alloying elements in these metals makes them susceptible to localized corrosion at the same time vulnerable to bacterial attachment. A great number of reports on aircraft deterioration are related to microbial growth by contamination inside fuel storage tanks and aircraft wing tanks; this phenomenon is known as microbiologically influenced corrosion (MIC). As expected, corrosion and biocorrosion increase maintenance costs and time of the aircraft in the hangar. Therefore, the growing interest is to shed light on these issues and develop future inhibition methods. In this chapter, we will give an overview of microbiologically influenced corrosion associated with AA 2024 and 7075 by consortia and bacteria. Three mechanisms of biocorrosion in aluminium alloys have been described. In addition, some alternatives methods to battle the effect of biocorrosion will be shown, these methods are based on green compound which blocking of attached of bacteria and promote the detachment of biofilm, being these a tendency of the last innovation way to inhibit this kind of phenomenon.

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Section: Mic Related To Aluminum Alloy 2024 and 7075mentioning

confidence: 99%

Microbiologically Influenced Corrosion in Aluminium Alloys 7075 and 2024

Nelson¹,

Maria²,

Mamiè³

et al. 2017

Aluminium Alloys - Recent Trends in Processing, Characterization, Mechanical Behavior and Applications

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“…Although a number of studies have documented the process of MIC occurring in aluminum-matrix composites from a chemical and biological perspective, [18][19] few studies have documented the effect of MIC on the mechanical properties of aluminum-matrix composites. The present study investigates the effect of MIC on the tensile strength of an alumina (Al 2 O 3 )-particle-reinforced aluminum-matrix composite.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of a Silane Coating Against Microbiologically Influenced Corrosion of an Alumina-Particle-Reinforced Aluminum 6061-Matrix Composite

et al. 2001

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The effectiveness of a self-assembled silane monolayer as protection for an alumina (aluminum oxide [Al 2 O 3 ])-particlereinforced aluminum-matrix composite against microbiologically influenced corrosion (MIC) was investigated. Tensile tests on coated and uncoated composite samples were conducted after microbiological exposures, and the effectiveness of these coatings against MIC was reported through mechanical strength and strain-to-failure measurements. Application of the silane monolayer to the composite surfaces was found to prevent degradation of the ultimate tensile strength (UTS) and strain-to-failure of the composite material in the fully annealed (temper designation: O) condition. In contrast, the UTS and strain-to-failure of the as-received extruded material (temper designation: F) were relatively insensitive to the corrosive effects of the marine Pseudomonas bacteria. Potentiodynamic corrosion measurements showed that the uncoated samples had a slightly lower pitting potential than the coated samples. Corrosion rates extrapolated from the electrochemical measurements (Tafel plots) were highest for the uncoated samples in the presence of the bacteria. Corrosion pitting on the surface of the annealed aluminum composite samples was localized, while no significant localized corrosion pitting was observed on the surface of the asextruded material. These observations were used to explain the results of the mechanical tests and electrochemical measurements. This study demonstrates the deleterious effects of microbiologically influenced corrosion on the mechanical properties of aluminum-matrix composites; the effect of mechanical processing on the propensity of microbiologically influenced corrosion; and the potential for developing fast, easy, and cost-effective MIC protection for metal-matrix composites using silane self-assemblies.

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“…Unfortunately, AA 2024 alloy is very susceptible to corrosion in chloride-containing media. Microbial contamination of jet fuels has been reported since the early 1960s − and has been investigated into the 1980s. − Microorganisms foul fuel tanks as airborne contaminants, through water that enters the tank, or in contaminated fuel . Accumulation of water in fuel tank permits growth of the microorganisms and may lead to microbiologically induced corrosion (MIC) of the tank structures.…”

Section: Introductionmentioning

confidence: 99%

Microbial Corrosion of Aluminum 2024 Aeronautical Alloy by Hydrocarbon Degrading Bacteria Bacillus cereus ACE4 and Serratia marcescens ACE2

Rajasekar

Ting

2010

Ind. Eng. Chem. Res.

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Microbial growth and contamination in aviation fuel storage tanks and aircraft wing tanks cause metal corrosion, plugging of the fuel filter, and increased maintenance costs associated with these problems. This paper reports the microbiologically induced corrosion (MIC) and electrochemical behavior of aluminum alloy (AA 2024) in the presence of hydrocarbon-degrading bacteria Bacillus cereus ACE4 (a Gram-positive bacteria) and Serratia marcescens ACE2 (a Gram-negative bacteria). Electrochemical impedance spectroscopy and metallographic analysis of the metal AA 2024 exposed to a simulated fuel tank environment showed that the bacteria caused pitting corrosion. Scanning electron microscopy−energy-dispersive X-ray spectroscopy analysis (SEM−EDAX), atomic force microscopy (AFM), and Fourier-transform infrared spectroscopy (FTIR) analyses of the aluminum alloy coupons with bacterial biofilm developed after exposure to minimal salt medium confirmed that extracellular polymeric substances accumulate with exposure time and revealed that biofilms are formed as microcolonies, which subsequently cause pitting corrosion. Hydrophobicity of the cell surface was examined using bacterial adhesion to hydrocarbons (BATH) assay. The hydrophobicity and emulsification index of B. cereus ACE4 grown in n-hexadecane containing medium was higher (86% and E 72 85%) than that of S. marcescens ACE2 (60% and E 72 75%), This significant difference may be due to the efficiency of biosurfactant production, which contributes to increase in the cell surface hydrophobicity of the B. cereus ACE4, and enhanced bacterial adhesion on the AA 2024 metal surface. The corrosion damage caused by B. cereus ACE4 is vigorous compared with that from S. marcescens ACE2. This study provides some insight into the MIC of AA 2024 by two hydrocarbon-degrading bacteria in fuel/water mixtures.

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Corrosion of AA 7075 Aluminum Alloy in Media Contaminated withCladosporium resinae

Cited by 20 publications

References 0 publications

Microbiologically Influenced Corrosion in Aluminium Alloys 7075 and 2024

Microbiologically Influenced Corrosion in Aluminium Alloys 7075 and 2024

Effectiveness of a Silane Coating Against Microbiologically Influenced Corrosion of an Alumina-Particle-Reinforced Aluminum 6061-Matrix Composite

Microbial Corrosion of Aluminum 2024 Aeronautical Alloy by Hydrocarbon Degrading Bacteria Bacillus cereus ACE4 and Serratia marcescens ACE2

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