Mechanical performance of micro-Cu and nano-Ag reinforced Al-CNT composite prepared by powder metallurgy technique

Irhayyim, Saif S.; Ahmed, Saad R.; Annaz, Abdulkader Ahmed

doi:10.1088/2053-1591/ab3b21

Cited by 14 publications

(11 citation statements)

References 20 publications

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“…These results are linked to the fact that when metal cations are added to the anatase phase, with a valence band less than + 3, or larger radii than Ti 4+ ions occupy substitutional positions in the TiO 2 matrix (Mosquera et al 2016 ). Furthermore, the presence of nanoparticles in TiO 2 hybrid matrix composites prevents dislocation motion and grain boundary migration, and that will cause enhancement of the nanocomposite strength (Annaz et al 2020 ; Irhayyim et al 2019 ). The strength enhancement can be regarded by increasing the nanosized silver content to the semi-homogeneous distribution of Ag nanoparticles in TiO 2 matrix and the structure of the formed Ag@TiO 2 -modified nanopigments.…”

Section: Resultsmentioning

confidence: 99%

Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO2-modified nanopigments

Samir

Geioushy

El-Sherbiny

et al. 2022

Environ Sci Pollut Res

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In this work, the effect of using Ag-doped TiO2 nanopigments on optical, mechanical and antimicrobial properties of coated paper was explored. Furthermore, the long-term antimicrobial activity of the coated paper was examined for up to 25 years. Titanium dioxide (TiO2) nanoparticles have been synthesized and doped with different percentages of Ag nanoparticles (Ag NPs) using a simple wet chemical approach. The Ag@TiO2 modified nanopigments were in the form of nanorods with an average size of about 20 nm as observed from TEM images. Increasing Ag content from 0.01 to 1.0% showed an increase in the mechanical properties of coated paper in terms of tensile, stretching, tensile energy absorption and burst while preserving the optical properties. Moreover, the antimicrobial inhibition activity increased with increasing the Ag content. The 1% Ag@TiO2 showed a long-lasting antimicrobial effect against Staphylococcus aureus (S. aureus) Gram-positive bacteria even after 25 years of ageing (93.4% inhibition). Investigation of reactive oxygen species (ROS) generation and reaction mechanism of antimicrobial activity over Ag/TiO2 under visible light is proposed. These results suggest that Ag/TiO2 NPs can be potentially used as a disinfection coating for paper and improving its mechanical properties. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO2-modified nanopigments

Samir

Geioushy

El-Sherbiny

et al. 2022

Environ Sci Pollut Res

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“…2. As shown in Figure 8 the micro-hardness increased with increasing the graphite content up to 4 vol.%, which will be caused a reduction in wear rate accordance with Archard's law [10], [22], [30] due to increasing the composite resistance to the wear rate. 3.…”

Section: Effect Of Graphite Content On the Wear Ratementioning

confidence: 73%

“…The hardness is calculated by taking a mean value of five values for each sample. Diametral compressive strength (σ c ) is performed by applying a perpendicular load on the diameter of the sample that is in a disc form, and it is calculated by the following equation [10], [22]:…”

Section: Tests and Characterizationsmentioning

confidence: 99%

Effect of graphite particles on physical and mechanical properties of nickel matrix composite

Hammood

Mahmood

Irhayyim

2019

PEN

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The composite materials have effective properties and characteristics for use in most modern and important applications such as space and transportation applications, especially in internal combustion engines as well as applications and marine industries. In this study, Nickel-5 vol.% Zirconium dioxide composites with 0, 2, 4, 6 and 8 vol. % of graphite particles are prepared by powder metallurgy technique. The samples are pressed at 900 MPa for 1 min after mixing the hybrid composite powders for 15 min by using a mechanical mixer, followed by sintering at 1160 oC for 3 hours. The hybrid composites are characterized by using an optical microscope. The wear test under dry sliding conditions was performed under various loads of 5, 10, 15 and 20 Newton and at a fixed sliding distance of around 1810 m. It is found that increasing graphite content results decrease in bulk and apparent densities in contrast with total porosity, apparent porosity, and water absorption. Alternatively, the increasing volume fraction of graphite particles improves the micro-hardness, diametral compressive strength and wear resistance till an optimum value up to 4 %, then severely reduction is observed. Whereas the wear resistance decreased by increasing the applied loads for all reinforcement content. The results, in conclusion, reveal that the hybrid composites at 4 % graphite particles relatively have high mechanical and wear properties, and it could be considered a suitable because of high corrosion resistance in our daily life applications.

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“…Ultrasonic cavitations, wet mixing, and metallic nanoparticles have been used to enhance the dispersion of CNTs in aluminum by decreasing the Van der Waals and hydrogen bond interactions. The addition of silver nanoparticles (AgNPs) [8] has been successful used with CNTs to produced conductive composites. Saif et al [9] reinforced on Al-1%CNTs with 0, 1, 2, 3,4% AgNPS and Cu.…”

Section: Introductionmentioning

confidence: 99%

High Strength and Electrical Conductivity of α-Al-CNTs + GAgNPs Nanocomposites

Aigbodion

2023

Lecture Notes in Mechanical Engineering

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The development of new advanced material of α-Al- carbon nanotubes (CNTs and green synthesis silver nanoparticles (GAgNPs) superconductor nanocomposites was sudied. Green synthesis silver nanoparticles (GAgNPs) was used for the decoration of CNTS. The composites were by modified spark plasma sintering (SPS). The microstructure, strength and electrical conductivity of the nanocomposites were determined. The formation of sub-grain in the Al-4%CNTs + 2%GAg.NPs composite generates more dislocation density. The addition of GAgNPs to Al-CNTs significantly enhanced the ductility mode of fracture associated with the AlAg3(110) and AlAg2(100) phases and the small sub-grain formed at the surface. It can be concluded that a higher strength, electrical conductivity can be made from the developed nanocomposite.

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Mechanical performance of micro-Cu and nano-Ag reinforced Al-CNT composite prepared by powder metallurgy technique

Cited by 14 publications

References 20 publications

Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO2-modified nanopigments

Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO2-modified nanopigments

Effect of graphite particles on physical and mechanical properties of nickel matrix composite

High Strength and Electrical Conductivity of α-Al-CNTs + GAgNPs Nanocomposites

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