Cu−Zn−Al2O3 nanocomposites: study of microstructure, corrosion, and wear properties

Baghani, Mostafa; Mahmood, Asif; Askari, Mehdi

doi:10.1007/s12613-017-1427-0

Cited by 16 publications

(3 citation statements)

References 44 publications

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“…Saber et al 25 found that, in both 3.5 wt.% NaCl and 0.5 M H 2 SO 4 solutions, the corrosion rate of Cu/Al2O3 nanocomposite increased with increasing Al2O3 content. Rajesh et al and Hosseini et al 13 , 29 found that the corrosion rate of pure copper and copper coated with TiO2 was higher than Cu/Al 2 O 3 composites. Naseri et al 23 recommended that, in Cu/TiO2interface, the galvanic couple existes and Cu acts as the anode while it acts as the cathode.…”

Section: Resultsmentioning

confidence: 96%

“…On the other hand Baghani et al 28 stated that, the corrosion current density for the Cu–Zn–Al 2 O 3 nanocomposite is less than that for the Cu–Zn alloy. It was observed from the investigations made by Hosseini et.al and Rajesh et al 13 , 29 that the corrosion rate of pure copper and copper coated with TiO 2 were higher compared to Cu/Al 2 O 3 composites. Ajeel et al 30 confirmed that the reinforced copper alloy with 3 wt.% of Al 2 O 3 and TiO 2 has a lower corrosion rate than reinforced copper alloy reinforced with 1.5 wt.% of Al 2 O 3 and TiO 2 .While the reinforced alloys with 1.5 wt.% of Al 2 O 3 and TiO 2 has lower corrosion rate compared to the copper alloy.…”

Section: Introductionmentioning

confidence: 94%

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Characterization and performance evaluation of Cu-based/TiO2 nano composites

Сабер

El-Aziz

Felemban

et al. 2022

Sci Rep

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Copper and copper alloys are used in industrial applications and food contact surfaces due to their desirable properties; copper metal matrix composites have been exciting researchers' attention in recent years since they can offer many valuable characteristics. The present study investigated the effects of the TiO2 nanoparticles addition with different weight percent on the hardness and corrosion behavior of copper nanocomposites. The powder metallurgy method was used to fabricate the Cu/TiO2 reinforced with different weight fractions of TiO2 nano particles up to 12 wt.%. The corrosion behavior of fabricated specimens is evaluated using potentiodynamic polarization curves and electrochemical impedance spectroscopy in different solutions. These solutions were 3.5wt.% NaCl, 0.5 NaOH and 0.5 M H2SO4 reflected different pH. The results showed that the addition of TiO2 nano particles improves pure copper's hardness. The hardness of pure copper increased from 53 to 91 HV by adding 12 wt.% TiO2. The corrosion current density (Icorr) of copper nanocomposites test specimens was higher than Icorr of pure copper in all test solutions. As TiO2 nano particles increase, the corrosion resistance of Cu nano composites decreased. All test specimens exhibited little corrosion current density in 3.5 wt.% NaCl solution as compared with other test solutions.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 94%

Characterization and performance evaluation of Cu-based/TiO2 nano composites

Сабер

El-Aziz

Felemban

et al. 2022

Sci Rep

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show abstract

“…These are attributed to the formation of nano-scaled Cr precipitates in the Cu matrix during the aging process. This is because of the extremely low solubility of Cr in Cu at room temperature and the interactions of grain boundary strengthening and strain hardening that occurs during the tensile test [20]. From Figure (11) the decrease in elongation from 50.7% to 28.5 % was observed with an increase in Cr content.…”

Section: Tensile Testmentioning

confidence: 98%

Characterization of Microstructure and Mechanical Properties of CuCr Alloy Produced by Stir Casting

Eqal

Ajeel

Yaseen

2019

DJES

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The relatively low mechanical properties of pure copper at low and high temperature made it very limited applications. The mechanical properties of the copper can be improved by adding a small amount of elements such as Cr. This work consists of four CuCr alloy castings (0.3, 0.8, 1.2 and 1.5%) by using the stir casting method in an argon atmosphere. Then, the heat treatment was done for these alloys which included solution treatment and aging. Heat treatment was treated at 980 ° C for 1 hour, then water-quenching, followed by an aging treatment at 480 ° C for 2.4 and 6 hours. The Optical Microscopy and the Scanning Electron Microscopy (SEM) with (EDS) were used to study the microscopic structure of the produced alloys. The results showed that the mechanical properties of copper increased with increasing chromium content. The microstructure of the castings consist of the dendiritic structure, columinar and segregation. It has been also indicated that after heat treatment and aging, the microstructure changed to fine grains and the clusters disappeared. XRD showed a α-Cu phase and a small amount of CrO2 in microstructures. The highest value of hardness and the ultimate tensile were 101 Hv and 239.12 MPa, respectively. They were achieved at 1.5wt% addition of Cr at 480oC and 4hrs aging

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Tungsten nanoparticle-strengthened copper composite prepared by a sol-gel method and in-situ reaction

Chen

Guo

et al. 2019

Int J Miner Metall Mater

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Cu−Zn−Al2O3 nanocomposites: study of microstructure, corrosion, and wear properties

Cited by 16 publications

References 44 publications

Characterization and performance evaluation of Cu-based/TiO2 nano composites

Characterization and performance evaluation of Cu-based/TiO2 nano composites

Characterization of Microstructure and Mechanical Properties of CuCr Alloy Produced by Stir Casting

Tungsten nanoparticle-strengthened copper composite prepared by a sol-gel method and in-situ reaction

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