Study of Corrosion Resistance of Aluminum Alloy 6061/SiC Composites in 3.5% NaCl Solution

Abbass, Muna Khethier; Hassan, Khairia S.; Alwan, Abbas S.

doi:10.7763/ijmmm.2015.v3.161

Cited by 34 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corrosion behavior of the Al-SiC composite has been reported contradictorily by different authors. Some of them reported that Al-SiC composite shows better corrosion resistance as compared to Al alloy [18,19], while some of the authors reported low corrosion resistance in the case of Al-SiC composite as compared to Al alloy [20][21][22]. The finer size of SiC particles has better corrosion resistance as compared to the bulky particles [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

View full text Add to dashboard Cite

Aluminium-based hybrid metal grid composites (MMC) are extensively utilized in automobile applications (engine cylinders, pistons, etc.) as they exhibit a fantastic blend of properties. Here, a detailed study of nano-mechanical, electrochemical and Raman spectroscopic behavior of friction stir processed Al6061-SiC-graphite hybrid surface composite is presented. The effect of various tool rotational speeds was evaluated along with the monitoring of variation in axial force. Microstructural changes with various tool rotational speeds are studied by using a scanning electron microscope. Raman spectroscopy and X-Ray diffraction studies are used for the spectroscopic characterization of the fabricated hybrid and mono surface composites. Residual stresses and various crystal structure disorders of reinforcement result in the significant change in intensity and a considerable shift in Raman peak positions. The nano-mechanical behavior of the fabricated composite with various reinforcements and tool rotational speeds are analyzed by using nano-indentation. The nano-mechanical behavior of hybrid composite fabricated with an optimum set of processing parameters is superior to mono composites fabricated with the same processing parameters. Also, the electrochemical behavior of the fabricated composites is studied by linear potentiodynamic polarization test. The Al6061-SiC-graphite hybrid surface composite reveals excellent nano-mechanical and electrochemical behavior when fabricated with an optimum set of processing parameters. The tool rotational speed has a pronounced effect on the dispersion of agglomerates and grain refinement of the matrix material. The processing parameters extensively affect the Raman spectroscopic behavior of the hybrid composite. The hybrid surface composite shows better corrosion resistance than the mono composites when fabricated with an optimum set of processing parameters. Reduced intergranular as well as interfacial corrosion pits in hybrid composites increased its resistance to corrosion.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…Zakaria (2014) studied the effect of size and volume fraction of SiC particles on corrosion behavior of pure aluminum matrix composites in 3.5% NaCl solution and found that the corrosion rate increased with increasing the duration exposure. Abbass, Hassan, and Alwan (2015) found that adding SiC particles in 10% and 20% to Al6061 alloy matrix increased the corrosion rate in 3.5% NaCl solution.…”

Section: Introductionmentioning

confidence: 95%

Effect of Al2o3 Nanoparticles on Corrosion Behavior of Aluimnum Alloy (AL-4.5 Wt% CU-1.5 Wt% Mg) Fabricated by Powder Metallurgy

Abbass

Sultan

2019

Engineering Structures and Technologies

View full text Add to dashboard Cite

In this research the effect of Al2O3 nanoparticles on corrosion behavior of aluminum base alloy (Al-4.5 wt% Cu-1.5 wt% Mg) has been investigated. Nanocomopsites reinforced with variable contents of 1, 3 and 5 wt% of Al2O3 nanoparticles were fabricated using powder metallurgy. All samples were prepared from the base alloy powders under the best powder metallurgy processing conditions of 6 hr of mixing time, 450 MPa of compaction pressure and 560 °C of sintering temperature. Density and micro hardness measurements, and electrochemical corrosion tests are performed for all prepared samples in 3.5 wt% NaCl solution at room temperature using potentiostate instrument. It has been found that density and micro hardness of the nanocomposite increase with increasing of wt% Al2O3 nanoparticles to Al matrix. It was found from Tafel extrapolation method that corrosion rates of the nanocomposites reinforced with alumina nanoparticles were lower than that of base alloy. From results of corrosion test by potentiodynamic cyclic polarization method, it was found the pitting corrosion resistance improves with adding of Al2O3 nanoparticles. It was noticed that the pits disappear and the hysteresis loop disappears also from anodic polarization curve.

show abstract

“…The corrosion behavior of metal matrix composites and nanocomposites has been thoroughly investigated and reported [50][51][52][53][54] , however, it was not considered for hybrid ceramic matrix nanocomposites. Therefore, the corrosion rates of the alumina and Al 2 O 3 -5SiC-2CNT nanocomposite samples were compared with those of some metals and metal matrix nanocomposites 50,[55][56][57][58][59][60][61] and presented in Table 2. It can be clearly seen that the Al 2 O 3 and Al 2 O 3 -5SiC-2CNT nanocomposite have relatively low corrosion rates.…”

Section: Oda and Yoshiomentioning

confidence: 99%

Corrosion Behavior of Spark Plasma Sintered Alumina and Al2O3-SiC-CNT Hybrid Nanocomposite

et al. 2020

View full text Add to dashboard Cite

The use of ceramic-based materials has become more common in many applications because of their unique characteristics and properties. Design of alumina hybrid nanocomposites achieved by incorporating two nanoreinforcements, with different morphologies and/or attributes, such as CNTs and SiC, is a new approach that has been adopted to enhance the properties of alumina. The microstructural, mechanical, electrical, and thermal properties of Al 2 O 3-SiC-CNT hybrid nanocomposites were investigated and reported in the literature. However, the corrosion behavior was not considered. The present paper reports the electrochemical corrosion behavior of pure Al 2 O 3 and Al 2 O 3-5SiC-2CNT hybrid nanocomposite in acidic (2.34M HCl) and alkaline (6.5M NaOH) environments at room temperature. Ball milling (BM) and spark plasma sintering (SPS) were used for preparation of samples. The microstructure of sintered samples was investigated through field emission scanning electron microscopy (FE-SEM). Potentiodynamic polarization (PDP) technique was used to investigate the corrosion behavior. The corrosion rate of the Al 2 O 3-5SiC-2CNT nanocomposite increased 96 and 178% in HCl and NaOH solution, respectively, compared to alumina. Possible corrosion mechanisms and factors effecting corrosion were discussed.

show abstract

Study of Corrosion Resistance of Aluminum Alloy 6061/SiC Composites in 3.5% NaCl Solution

Cited by 34 publications

References 8 publications

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Effect of Al2o3 Nanoparticles on Corrosion Behavior of Aluimnum Alloy (AL-4.5 Wt% CU-1.5 Wt% Mg) Fabricated by Powder Metallurgy

Corrosion Behavior of Spark Plasma Sintered Alumina and Al2O3-SiC-CNT Hybrid Nanocomposite

Contact Info

Product

Resources

About