Nucleation and growth mechanisms of interfacial Al 4 C 3 in Al/diamond composites

Che, Zifan; Zhang, Yang; Li, Jianwei; Zhang, Hailong; Wang, Xitao; Sun, Ce; Wang, Jinguo; Kim, Moon J.

doi:10.1016/j.jallcom.2015.10.075

Cited by 53 publications

(18 citation statements)

References 28 publications

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“…Finally, the main growth direction of Al 4 C 3 was longitudinal [48]. The longitudinal growth speed of Al 4 C 3 was controlled by diffusion and Ostwald ripening [49]. The Ostwald ripening process is confirmed by the significant change in the Al 4 C 3 particle size.…”

Section: Discussionmentioning

confidence: 99%

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

2018

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Under vacuum Al-Mg alloy, liquids were successfully infiltrated into carbon/carbon (C/C) composites at high temperatures. Then, the mechanical properties, the metallographics, the scanning electron microscope images, the transmission electron microscope images, the X-ray diffraction images, and the energy dispersive spectroscopy results of C/C-Al-Mg composites were analyzed. The result showed that the bending property of C/C-Al-Mg composites reached 183 MPa whereas that of C/C composites totaled 165 MPa. The compressive strength of C/C-Al-Mg measured 206 MPa whereas that of C/C composites amounted to 142 MPa. The flexural strength and compressive strengths of the steeped metal sliders measured 121 and 104 MPa, respectively. The alloy liquid infiltrated into the matrix by forming a "network conduction" structure which reduced the resistivity and improved the conductivity of the composites. The resistivity of C/C-Al-Mg totaled 1.63 µΩm whereas that of C/C was 3.56 µΩm. During infiltration, an excellent wettability was observed between Al and the carbon matrix due to the existence of Al 4 C 3 . The friction coefficients of C/C, the steeped metal slide, and C/Al-Mg were 0.152, 0.068, and 0.189, respectively. The properties of C/C-Al-Mg composites meet the performance requirements of locomotive pantograph sliders.

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Section: Discussionmentioning

confidence: 99%

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

2018

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“…Much attention is devoted to the development of new composites, since they can exhibit the properties unattainable in conventional nonreinforced materials . Many investigators have studied aluminum matrix composites with carbon reinforcements and possible reaction between aluminum and carbon . Nanopowder application in composites enables improvement of a number of key properties; however, the temperature range of such composite application must be studied.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Many investigators have studied aluminum matrix composites with carbon reinforcements and possible reaction between aluminum and carbon. [4][5][6][7][8][9][10][11] Nanopowder application in composites enables improvement of a number of key properties; however, the temperature range of such composite application must be studied.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of fullerenes and carbon onions application for reinforcing the aluminum matrix in the metal matrix composites

Попов

Борунова

Senatulin

et al. 2020

Surface & Interface Analysis

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Aluminum matrix composites with fullerenes and carbon onions as reinforcing nanoparticles were studied by X‐ray diffraction (XRD) and differential scanning calorimetry (DSC). Composites were produced by mechanical alloying. It is demonstrated that aluminum carbide formation (the reaction proceeds between aluminum and carbon nanoparticles) starts at 300 to 370°C, which is much lower compared with the starting temperature of the reaction between aluminum and carbon macromaterials.

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“…Further applications of Al 4 C 3 in structural composite technology involve its use as sintering aid for the manufacturing of α‐SiC, reactant powder for the fabrication of (Ti 1‐x Nb x ) 2 AlC, Ti 2 AlC, Ti 3 AlC 2 , and Cr 2 AlC quaternary and ternary alloys and also as buffer layer for m‐ plane GaN . Moreover, Al 4 C 3 is commonly observed as an intermediate phase due to the reaction between aluminum and carbon‐based reinforcements such as SiC particles, carbon and graphite fibers, B 4 C particles and diamond composites …”

Section: Introductionmentioning

confidence: 99%

Structural, Electronic and Vibrational Properties of Al₄C₃

Kioseoglou

Le‐Tran

Giaremis

et al. 2019

Physica Status Solidi (b)

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Al 4 C 3 single crystals are synthesized by the reaction between SiC and aluminum and are structurally verified and analyzed by Raman and X-ray diffraction spectra. The optical absorption measurements of the Al 4 C 3 crystals indicated that the bandgap is about 2.3 eV, which surprisingly is much higher than the bandgap value from the literature. In order to elucidate the discrepancy between the new experimental results and the literature, an advanced ab initio based investigation on the structural, electronic and vibrational properties of the Al 4 C 3 is performed. Remarkably, the scGW approach arrived at an indirect band gap Γ ! L equal to 2.12 eV while the HSE06 calculated band gap was found even closer to the experimental value equal to 2.27 eV. In addition, the hole effective mass is found to be considerably high due to the flat nature of the valence band at the Γ, indicating low hole mobility. Moreover, phonon calculations indicated that the vibrations of the Al atoms contribute mostly on low frequency acoustic branches, while vibrations from C atoms have a stronger contribution to optical phonons.

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Nucleation and growth mechanisms of interfacial Al 4 C 3 in Al/diamond composites

Cited by 53 publications

References 28 publications

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

Peculiarities of fullerenes and carbon onions application for reinforcing the aluminum matrix in the metal matrix composites

Structural, Electronic and Vibrational Properties of Al₄C₃

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Nucleation and growth mechanisms of interfacial Al 4 C 3 in Al/diamond composites

Cited by 53 publications

References 28 publications

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

Effect of Al–Mg Alloy Infiltration on Mechanical and Electrical Properties for Carbon/Carbon Composites

Peculiarities of fullerenes and carbon onions application for reinforcing the aluminum matrix in the metal matrix composites

Structural, Electronic and Vibrational Properties of Al4C3

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Structural, Electronic and Vibrational Properties of Al₄C₃