Compression and corrosion behaviour of sintered copper-fly ash composite material

Rajan, S Thanga Kasi; Balaji, A.; Raghav, G R; Vettivel, S.C.

doi:10.1088/2053-1591/aafaec

Cited by 8 publications

(6 citation statements)

References 27 publications

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“…Fine graded W powders of size less than 45 μm with a purity level of 97.92% were used as another reinforcement. density is due to addition of 6% of low density FA and 3% W. The reason is in good agreement with Thanga Kasi Rajan et al [24] and Balamurugan et al [15] reported that the addition of FA in Cu matrix decreases the relative density of the composites. The increase in addition of reinforcement obviously increases the porosity of the fabricated samples in P/M process as FA is in large volume compared to W. The density increases when the percentage addition of W increases.…”

Section: Potentiometric Polarization Testsupporting

confidence: 86%

“…The Compression test was conducted to find the mechanical behavior of the samples as per the ASTM E9-89 standard using a computerized universal testing machine with a feed rate of 1 mm/minute [24]. The Compression test was carried out for all the samples with the help of mirror polished die sets.…”

Section: Compression Testmentioning

confidence: 99%

“…The Corrosion test was conducted on the prepared Cu-FA-W hybrid composite material using the Electrochemical workstation of model: Biologic Sp-150. Tafel extrapolation curves and EIS tests were conducted in 1 N HCl and seawater media as per the procedure is given in the article [24,30,31]. Seawater was taken from Rameshwaram, Tamil Nadu, India.…”

Section: Potentiometric Polarization Testmentioning

confidence: 99%

“…The particle shape and size of the FA were already tested and given in our previous article. It was observed that FA particles are spherical in shape with an average size of around 8 μm and the particle size ranged from 2 to 10 μm [24]. Fine graded W powders of size less than 45 μm with a purity level of 97.92% were used as another reinforcement.…”

Section: Potentiometric Polarization Testmentioning

confidence: 99%

“…The reason and mechanism of decrease in compressive strength of the composite material were explained with the concept of grain deformation and Boundary Slip [23]. The major cause for the decrease in the compressive strength of Cu-FA was identified as boundary slip [24].…”

Section: Introductionmentioning

confidence: 99%

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Investigation and characterization of Copper-Fly ash-Tungsten hybrid composites synthesized through P/M process

Rajan

Balaji

Raghav

et al. 2020

Mater. Res. Express

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This research paper describes the enhancement of mechanical, wear and corrosion behaviour of the Copper (Cu) matrix composite by reinforcing Fly ash (FA) and Tungsten (W). The main objective of this study was to reduce the weight and cost of the hybrid composites. The weight percentage of low density material (FA) was kept constant at 6% and samples were prepared by the addition of W in weight percentages of 3, 6 and 9 in the Cu matrix. The characterization of the hybrid composites was studied using a Scanning Electron Microscope (SEM) and Energy-dispersive spectroscopy (EDS). The micrographs revealed the uniform distribution of W and FA in the Cu matrix. From the mechanical characterization, it was identified that there is an increase in microhardness and compressive strength with the addition of W particles. It can be understood that the W particles occupy substitutional type reinforcement and FA particles occupy interstitial type reinforcement in the Cu matrix. The Wear behavior and its mechanism were studied using worn surface SEM micrographs. It was observed that the lowest specific wear rate was recorded for the hybrid composition of Cu-6FA-6W. Electrochemical polarization test and Electrochemical Impedance Spectroscopy (EIS) study revealed that Cu-6FA-9W shows higher corrosion resistance in both 1 N HCl (256.593×10 −4 Ω cm 2 ) and seawater media (219.855×10 −4 Ω cm 2 ) than pure Cu.

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Section: Potentiometric Polarization Testsupporting

confidence: 86%

Section: Compression Testmentioning

confidence: 99%