Corrosion resistance of Al-based metal matrix composites

Shimizu, Yoshiaki; Nishimura, Toshiyasu; Matsushima, Iwao

doi:10.1016/0921-5093(95)80065-3

Cited by 66 publications

(27 citation statements)

References 7 publications

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“…This has been attributed to localized attack of the MMC at the matrix interface, resulting in pitting or crevice corrosion. The interfaces were preferred sites for passive film breakdown (pitting initiation sites), that produce voids, resulting in an easier breakdown of the oxide layer [7][8][9]. Pitting in composites has been observed at the reinforcement matrix interface [10][11][12].…”

Section: Introductionmentioning

confidence: 96%

Corrosion behaviour of aluminium metal matrix composites reinforced with TiC processed by pressureless melt infiltration

et al. 2005

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The corrosion resistance of commercial aluminium alloy (2024) and binary Al-Cu x and Al-Mg x alloys reinforced with TiC particles using a pressureless infiltration method has been evaluated in 3.5% NaCl solution using potentiodynamic polarization curves and linear polarization resistance measurements. The TiC preforms were sintered at 1250, 1350 and 1450°C and infiltrated in the range of 900-1200°C under argon atmosphere. Some specimens were heat treated at 530°C for 150 min, water quenched and subsequently artificially aged at 190°C for 12 h in an argon atmosphere and naturally aged at room temperature for 96 h, respectively. The corrosion resistance of the composites was evaluated as a function of the addition of Cu and Mg into the aluminium. In all cases pitting corrosion was observed with or without additions of Cu or Mg, but these elements increased the anodic corrosion current. However, it was found that addition of TiC particles in the composite without heat treatment reduced the anodic current density and the number and size of pits in the Al-2024 alloy. When the heat treatment was applied to the composite, either artificially or naturally aged, the anodic current density of the Al-2024 alloy increased.

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Section: Introductionmentioning

confidence: 96%

Corrosion behaviour of aluminium metal matrix composites reinforced with TiC processed by pressureless melt infiltration

et al. 2005

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“…The mechanical and tribological characteristics of MMCs have been extensively studied, while corrosion characteristics are of increasing importance as MMCs become candidates for use in specific components subjected to corrosive media. Generally, the corrosion resistance of aluminum-based MMCs is less than the monolithic alloys, due to several reasons such as the crevices at the matrix/reinforcement interface, manufacturing defects, internal stress, microstructural differences and galvanic effects due to coupling of the matrix and reinforcement [2][3][4] . Recently, metal matrix nanocomposites (MMNCs) have become more attractive in various applications because of their improved mechanical properties over conventional micro-particle reinforced MMCs.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of Al/SiC and Al/Al2O3 nanocomposites

2012

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In the present investigation, the static immersion corrosion behavior of Al/Al 2 O 3 and Al/SiC nanocomposites in 1 M HCl acidic solution was evaluated. The nanocomposites were fabricated using conventional powder metallurgy (P/M) route. The effect of nanoparticulates size and volume fraction on the corrosion behavior of nanocomposites was studied. The durations of the corrosion tests ranged from 24 to 120 hours and the temperatures of the solution ranged from ambient to 75 °C. The corrosion rates of the nanocomposites were calculated using the weight loss method. The results showed that both Al/SiC and Al/Al 2 O 3 MMNCs have lower corrosion rates than the pure Al matrix. Such behavior was noticed at both ambient and higher temperatures. Generally, the Al/Al 2 O 3 nanocomposites exhibited lower corrosion rates than the Al/SiC nanocomposites. The Al/Al 2 O 3 (60 nm) nanocomposites exhibited the highest corrosion resistance among all the investigated nanocomposites. The corrosion rate was found to be reduced by increasing of the exposure time and the volume fraction of the nanoparticulates, while it was found to be increased by increasing of the nanoparticulates size and the solution temperature.

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“…Furthermore, the author reported addition magnesium exhibits higher corrosion resistance. Shimizu et al (1995) developed Al7075/SiC metal matrix composite (MMC) by squeeze casting method and studied the heat treated MMC increase the pitting potential and resist the stress corrosion cracking in 3.5% NaCl solution. …”

Section: Tensile Strengthmentioning

confidence: 99%

Mechanical and Corrosion Behavior of Al7075 (Hybrid) Metal Matrix Composites by Two Step Stir Casting Process

Sambathkumar¹,

Navaneethakrishnan²,

Ponappa³

et al. 2017

Lat. Am. j. solids struct.

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This paper investigates the mechanical properties and corrosion behavior of Metal Matrix Composites prepared using Al7075 alloy as a matrix, Silicon Carbide and Titanium Carbide as reinforcement particles. Two step stir casting process was used to fabricate the composites by varying volume fractions of Silicon Carbide and Titanium Carbide (0 to 15 vol. %). Microstructural analysis, mechanical and corrosion behavior were used to evaluate the performance of the composites. Uniform distribution of reinforcement particle was observed through optical photomicrographs. Vickers micro hardness tests were performed and the hardness values were increased with an increase in reinforcement from 0 to 15 vol. %. The tensile strength of the 10 vol. % of aluminum hybrid matrix composite was better than that of the base alloy. In 3.5% NaCl solution, it was observed that the 15 vol. % of the aluminum hybrid matrix composite have higher corrosion resistance in comparison the base alloy.

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Corrosion resistance of Al-based metal matrix composites

Cited by 66 publications

References 7 publications

Corrosion behaviour of aluminium metal matrix composites reinforced with TiC processed by pressureless melt infiltration

Corrosion behaviour of aluminium metal matrix composites reinforced with TiC processed by pressureless melt infiltration

Corrosion behaviour of Al/SiC and Al/Al2O3 nanocomposites

Mechanical and Corrosion Behavior of Al7075 (Hybrid) Metal Matrix Composites by Two Step Stir Casting Process

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