Study of a Highly Porous Composite Material Based on an Aluminum Matrix with an Ordered Cellular Structure Formed by Hollow Copper–Graphite Spherical Granules

Gulevskiy, V. A.; Антипов, В. И.; Виноградов, Л. В.; Tsurikhin, S. N.; Колмаков, А. Г.; Gulevskiy, V. V.; Prutskov, M. E.

doi:10.1134/s2075113322020150

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…These additives can disrupt the surface oxide film of the powder by reacting with the Al, improving its sintering properties and strength. In the preparation of some Al alloys or Cu alloys, it has been found that Cu and Al are prone to forming many intermediate phases under certain conditions, indicating that the addition of Cu may also be beneficial for the sintering of Al powder [32]. However, there are relatively few literature reports on this topic, which mainly focus on the strengthening of Cu for Al alloys, with fewer studies on the use of Cu content for the formation of porous Al wicks.…”

Section: Introductionmentioning

confidence: 99%

Effect of Copper Content on the Microstructure and Properties of the Sintered Porous Aluminum Wick

Cai,

Duan

2024

Metals

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Porous aluminum has been widely used as a wick, an electrode, and in other products, due to its advantages of a light weight, pore uniformity, and corrosion resistance. However, the dense alumina layer on the surface of Al powder hinders its densification during sintering. In this paper, porous aluminum was prepared via loose powder sintering with the addition of Cu as a sintering aid. The effects of Cu content on the microstructure and wick properties of the porous aluminum were investigated. The results showed that, with increasing Cu content, the porosity and capillary properties of porous Al decreased, while the compressive strength improved. The optimal Cu content was determined to be 3 wt.% and the prepared porous Al has a porosity of 47.5%, plateau stress of 11.82 MPa, and capillary characteristic parameter of 6.72 × 10−8 N, meeting the requirements for wicks in heat pipes. These findings contribute to the demand for the lightweight design of heat pipes for aerospace applications.

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Section: Introductionmentioning

confidence: 99%

Effect of Copper Content on the Microstructure and Properties of the Sintered Porous Aluminum Wick

Cai,

Duan

2024

Metals

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“…There are three main methods for producing ICs: liquid-phase sintering, solid-phase synthesis and gas-phase synthesis. Liquid-phase sintering includes casting and imbibition [ 3 , 11 ]. Gas-phase synthesis includes physical/chemical deposition [ 12 ] and magnetron sputtering technique [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion

et al. 2022

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This paper presents the implementation of the first stage of a study on the synthesis of the intermetallic compound in the Ni-Al system under shock-wave extrusion (SWE). A method was developed and experiments involving SWE of the reactive Ni–Al powder mixture were carried out. As a result, it was possible to obtain up to 56 vol.% of the final product and achieve 100% synthesis of NiAl. The results of metallographic analysis indicate that the process of high-velocity collapse of the tube created conditions for the formation of a cumulative flow, which directly affects the phase formation in NiAl. It was shown that the presence of the central hole in the powder sample reduced the effect of the Mach stem on the homogeneity of the NiAl structure. It was also determined that with a central hole with a 5 mm diameter, the effect of the Mach stem could not be observed at all. The goals of further studies are achieving 90–100 vol.% of the final product and reducing the porosity in the final product. Preliminary experimental studies have shown great potential for SWE to produce composite metal–intermetallic materials.

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Study of a Highly Porous Composite Material Based on an Aluminum Matrix with an Ordered Cellular Structure Formed by Hollow Copper–Graphite Spherical Granules

Cited by 2 publications

References 4 publications

Effect of Copper Content on the Microstructure and Properties of the Sintered Porous Aluminum Wick

Effect of Copper Content on the Microstructure and Properties of the Sintered Porous Aluminum Wick

Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion

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