Effect of nanometer SiC coating on thermal conductivity and bending strength of graphite flake/6063Al composites

Li, Tingting; Liu, Z.Y.; Zan, Y.N.; Liu, X.Y.; Wang, W.G.; Wang, D.; Xiao, B.L.; Ma, Zhiyuan

doi:10.1016/j.jallcom.2020.158023

Cited by 13 publications

(4 citation statements)

References 28 publications

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“…[7,8] Previous studies have aimed to improve the preparation process of graphite flake/aluminum composites to enhance their TC. These composites are typically manufactured using solid-phase [9,10] and liquid-phase [11,12] methods. When the liquidphase method is employed, it becomes challenging for the aluminum liquid to permeate between the graphite flakes.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Graphite Flake Volume Fraction on the Thermophysical Proper Ties of Graphite Flake/Aluminum Composites

Chi,

Du,

Sun

et al. 2024

Adv Eng Mater

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Vacuum hot‐press sintering process is utilized to manufacture graphite flake/aluminum composites, and the influence of graphite flake volume fraction on the microscopic structure, hardness, thermal conductivity (TC) and coefficient of thermal expansion (CTE) of the composites are investigated. The results indicate that the graphite flakes are neatly aligned along the in‐plane direction in the composites and exhibit a strong bond with the aluminum matrix interface. The in‐plane TC of the composite significantly increase with the addition of graphite flakes, whereas hardness, through‐plane TC, and the CTE decrease. As the volume fraction of graphite flakes in the composites increase from 15% to 60%, in‐plane TC improve from 278.8 to 353.8 W m–1 K–1, through‐plane TC decrease from 164.4 to 33.2 W m–1 K–1, and the CTE decrease to 13.7 × 10–6 K–1, achieving high thermal conductivity and a low coefficient of thermal expansion.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

The Effect of Graphite Flake Volume Fraction on the Thermophysical Proper Ties of Graphite Flake/Aluminum Composites

Chi,

Du,

Sun

et al. 2024

Adv Eng Mater

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“…Otherwise, the ceramic fillers could not only enhance the λ of the polymeric composites to a relatively high extent, but also keep excellent insulation performance of the polymer. However, the large amounts of ceramic fillers are usually needed, which may deteriorate the processing performance of the polymeric composites 18 …”

Section: Introductionmentioning

confidence: 99%

“…However, the large amounts of ceramic fillers are usually needed, which may deteriorate the processing performance of the polymeric composites. 18 In recent years, the production of hybrid fillers by combining ceramic fillers and metal particles has become a reliable way to obtain polymeric composites with high λ values and excellent insulation at a low filler loading. 14,19 Zhao et al 20 Cu-Ag particles reached a value of 1.4650 W/(mK), which was 651% higher than pure PDMS (0.1950 W/(mK)).…”

mentioning

confidence: 99%

Constructing “sesame‐biscuit” structured hybrids with SiC and Ag particles for enhancing thermal conductivity and dielectric constant of elastomer composites

Wang

Yang

2023

Polymers for Advanced Techs

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With the development of multifunctional and miniaturized integrated circuits, polymeric materials with large dielectric constant and high thermal conductivity have major significance in modern electronic industry. In this work, “sesame‐biscuit” structured thermally conductive hybrids were prepared by polydopamine (PDA) modification and in‐situ electroless silver (Ag) plating on the surface of silicon carbide (SiC), referred as SiC‐P‐Ag. Then, the SiC‐P‐Ag was incorporated into epoxidized natural rubber (ENR) matrix to yield polymeric composites (ENR/SiC‐P‐Ag) with excellent thermal and dielectric properties. It was found that PDA improved the interfacial compatibility and reduced the interface thermal resistance between SiC and ENR matrix. In addition, the formation of heat conduction channels and conductive Ag nanoparticles caused an increase in thermal conductivity of the 50 vol% ENR/SiC‐P‐Ag composite to 0.5655 W/(mK), which was 540% that of the pure ENR (0.1048 W/(mK)). Meanwhile, the 50 vol% ENR/SiC‐P‐Ag composite showed a low AC conductivity of 2.98 × 10−11 S/cm and a high dielectric constant of 35 at 10 Hz. It is noteworthy that this simple and efficient route for preparing ENR/SiC‐P‐Ag composites can also be applied in other fillers for simultaneously enhancing dielectric constant and thermal conductivity of polymeric composites.

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“…Besides, in situ SiC coating with a thickness of about 15 nm on G f , via the sol–gel method, could effectively improve the wettability and reduce the interface thermal resistance of SiC@G f /6063Al composites. [ 26 ] Therefore, employing this kind of precursor, the mechanical and thermal performances of the prepared composites were enhanced by the formation of in situ grown SiC (nanopowders/nanowhiskers/coatings). [ 27–29 ]…”

Section: Introductionmentioning

confidence: 99%

Effects of In Situ Grown SiC on the Microstructure and Anti‐Ablation Performance of C/C–SiC Composites Fabricated by Sol–Gel and Precursor Impregnation and Pyrolysis

Zhang

Fang

et al. 2022

Adv Eng Mater

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With the use of a novel precursor, SiC granules together with nanofibers were grown in situ in C/C felt utilizing sol–gel and precursor impregnation and pyrolysis methods. The results showed that the precursor possessed low residual carbon after the carbothermal reduction reaction. Moreover, owing to the gas–gas reaction between SiO and CO, the generated SiC largely filled the microvoids in the regions of the non‐woven layer. Furthermore, the in situ grown SiC of the composites was more continuous than the nubby SiC of polycarbosilane because of the uniform filling of SiC particles and nanofibers. All these factors are conducive to the formation of a compact layer of SiO2 during ablation by increasing the molten glass and impeding the infiltration of O2. As a result, the fabricated C/C–SiC composites exhibited better ablation resistance, and the linear and mass ablation rates were 7.284 ± 0.307 μm s−1 and 0.218 ± 0.023 mg s−1, respectively, after ablation for 120 s.

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Effect of nanometer SiC coating on thermal conductivity and bending strength of graphite flake/6063Al composites

Cited by 13 publications

References 28 publications

The Effect of Graphite Flake Volume Fraction on the Thermophysical Proper Ties of Graphite Flake/Aluminum Composites

The Effect of Graphite Flake Volume Fraction on the Thermophysical Proper Ties of Graphite Flake/Aluminum Composites

Constructing “sesame‐biscuit” structured hybrids with SiC and Ag particles for enhancing thermal conductivity and dielectric constant of elastomer composites

Effects of In Situ Grown SiC on the Microstructure and Anti‐Ablation Performance of C/C–SiC Composites Fabricated by Sol–Gel and Precursor Impregnation and Pyrolysis

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