Structural, optical and thermal properties of nanoporous aluminum

Ghrib, Taher

doi:10.1016/j.tca.2014.11.020

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…The combination often results in improved strength, higher operating temperature [ 1 , 2 ] and invariably, improved lifespan. Aluminium-based composites have attracted great interest in the field of materials science and engineering and this is because they display exceptional properties such as high specific strength, lightweight, excellent resistance to corrosion and remarkable mechanical properties [ 3 , 4 ]. Based on these properties, aluminium-based composites have found extensive application in the automotive industry, defence and aerospace [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Salifu,

Olubambi,

Teffo

2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Salifu,

Olubambi,

Teffo

2024

Heliyon

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“…HEAs are characterized by a composition of multiple principal elements; thus, they exhibit exceptional mechanical, thermal, and corrosion-resistant properties which make them promising candidates for various engineering applications [2,3]. Furthermore, MMCs, consisting of a metallic matrix reinforced with a secondary phase, have gained widespread recognition due to their enhanced properties, which include improved strength, stiffness, wear resistance, and thermal performance [4,5].…”

Section: Introductionmentioning

confidence: 99%

Field-assisted sintering of high-entropy alloy-reinforced aluminium matrix composites: phase identification and microstructural properties

Salifu,

Olubambi

2024

Int J Adv Manuf Technol

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This study investigates the design, phase identification, and microstructural properties of high-entropy alloy (HEA)-reinforced aluminium (Al) matrix composites. Thermophysical expressions for HEAs were employed during the design phase of the HEA; both theoretical frameworks and experimental analyses were used to anticipate stable phases while a field-assisted sintering technique was employed to consolidate the samples. Calculation of phase diagram (CALPHAD) predictions for the phases present in the HEA align with valence electron concentration (VEC) calculations as both predicted the presence of BCC and FCC phases. The microhardness results reveal a substantial increase in the hardness value of the composites as compared to the pure Al, such that as low as 5 wt% HEA addition resulted in over a 100% improvement, while the densification of the composites was found to decrease with an increase in the wt% of HEA. SEM micrographs and XRD analyses show fair dispersion, bonding, and phase integration in the HEA-reinforced composites.

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“…The total thermal conductivity can be determined by using the photothermal deflection technique, [32,33] which measures the temperature at the surface of a sample heated with a white halogen lamp periodically modulated with a frequency 𝑓 , and then it becomes a gradient in the air refractive index near the sample (Fig. 5).…”

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confidence: 99%

“…By passing a Laser beam parallel to the surface sample in the gradient index zone, it undergoes a periodic deflection of the form 𝜓 = |𝜓|𝑒 𝑖(2𝜋𝑓 𝑡+𝜙) , whose amplitude |𝜓| and initial phase 𝜙 can be expressed as [32] |𝜓| =…”

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confidence: 99%

High Thermoelectric Figure of Merit of Ag ₈ SnS ₆ Component Prepared by Electrodeposition Technique

Ghrib

Al–Otaibi

Almessiere

et al. 2015

Chinese Phys. Lett.

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A new thermoelectric material Ag8SnS6, with ultra-low thermal conductivity in thin film shape, is prepared on indium tin oxide coated glass (ITO) substrates using a chemical process via the electrodeposition technique. The structural, thermal and electrical properties are studied and presented in detail, which demonstrate that the material is of semiconductor type, orthorhombic structure, with a band gap in the order of 1.56 eV and a free carrier concentration of 1.46 × 10 17 cm −3 . The thermal conductivity, thermal diffusivity, thermal conduction mode, Seebeck coefficient and electrical conductivity are determined using the photo-thermal deflection technique combined with the Boltzmann transport theory and Cahill's model, showing that the Ag8SnS6 material has a low thermal conductivity of 3.8 Wm −1 K −1 , high electrical conductivity of 2.4 × 10 5 Sm −1 , Seebeck coefficient of −180 𝜇VK −1 and a power factor of 6.9 mWK −2 m −1 , implying that it is more efficient than those obtained in recently experimental investigations for thermoelectric devices.

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Structural, optical and thermal properties of nanoporous aluminum

Cited by 7 publications

References 29 publications

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Field-assisted sintering of high-entropy alloy-reinforced aluminium matrix composites: phase identification and microstructural properties

High Thermoelectric Figure of Merit of Ag ₈ SnS ₆ Component Prepared by Electrodeposition Technique

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Structural, optical and thermal properties of nanoporous aluminum

Cited by 7 publications

References 29 publications

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Phase stability and microstructural properties of high entropy alloy reinforced aluminium matrix composites consolidated via spark plasma sintering

Field-assisted sintering of high-entropy alloy-reinforced aluminium matrix composites: phase identification and microstructural properties

High Thermoelectric Figure of Merit of Ag 8 SnS 6 Component Prepared by Electrodeposition Technique

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High Thermoelectric Figure of Merit of Ag ₈ SnS ₆ Component Prepared by Electrodeposition Technique