Enhanced thermal conductivity and long-term stability of diamond/aluminum composites using SiC-coated diamond particles

Kondakci, Emin; Solak, Nuri

doi:10.1007/s10853-021-06817-x

Cited by 9 publications

(6 citation statements)

References 31 publications

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“…The 3DGN/Al composites with lower densification than that of pure aluminum are one of the reasons for the higher I corr [49]. The porosity and crevices between the interface of aluminum matrix and 3DGN reinforcement are favorable sites for pitting of metals in AMCs and accelerating the dissolution of aluminum matrix [50]. Furthermore, aluminum oxide is very dense, which can prevent further corrosion.…”

Section: Discussionmentioning

confidence: 99%

Mechanical Property and Corrosion Behavior of Powder-Metallurgy-Processed 3D Graphene-Networks-Reinforced Al Matrix Composites

et al. 2023

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Three-dimensional graphene networks (3DGN) have the potential to be used as a reinforcement for aluminum matrix composites due to their unique wrinkled structure and cost-effectiveness. In this work, the mechanical properties and corrosion resistance of 3DGN in Al matrix were systematically investigated. 3DGN/Al composites with weight ratios of 0, 0.075, 0.150, 0.225, and 0.300 3DGN were prepared by powder metallurgy following by ball mill and spark plasma sintering. Results revealed that the densification of 3DGN/Al composites slightly decreases with the increase of 3DGN content. Increased hardness without loss of ductility was recorded compared to the pure aluminum sample prepared under the same experimental conditions. 3DGN/Al composites exhibit higher corrosion currents density than that of pure aluminum, which shows that the addition of 3DGN reinforcement aggravates the corrosion of aluminum. This study can be used as a reference for future research on the effect of graphene on the various properties of graphene-reinforced aluminum matrix composites.

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Section: Discussionmentioning

confidence: 99%

Mechanical Property and Corrosion Behavior of Powder-Metallurgy-Processed 3D Graphene-Networks-Reinforced Al Matrix Composites

et al. 2023

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“…The diamond with the CTE of 1.0~3.0 × 10 −6 /K [8] composited to the Al matrix to perfectly match the CTE of the chip. Diamond/Al composites emerge as promising candidates for advanced thermal management due to their matching CTE, superior TC, and low density [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…However, the significant disparity in the physical and chemical characteristics between diamond particles and the Al matrix poses a challenge, leading to interface incompatibility that significantly reduces the TC of diamond/Al composite [11,12]. Furthermore, in conventional preparation methods (such as powder metallurgy [13], gas pressure infiltration [9], vacuum pressure infiltration [14], vacuum hot pressing [15], and spark plasma sintering [16]), the interface of the two phases inevitably produces Al 4 C 3 under high-temperature or long-term contact conditions [9,[13][14][15][16]. The presence of Al 4 C 3 at the interface not only significantly decreases the TC of the composite [17] but also restricts its application due to the hydrolytic nature of Al 4 C 3 [9,18].…”

Section: Introductionmentioning

confidence: 99%

Improved Bending Strength and Thermal Conductivity of Diamond/Al Composites with Ti Coating Fabricated by Liquid–Solid Separation Method

Zhou,

Jia,

Sun

et al. 2024

Materials

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In response to the rapid development of high-performance electronic devices, diamond/Al composites with high thermal conductivity (TC) have been considered as the latest generation of thermal management materials. This study involved the fabrication of diamond/Al composites reinforced with Ti-coated diamond particles using a liquid–solid separation (LSS) method. The interfacial characteristics of composites both without and with Ti coatings were evaluated using SEM, XRD, and EMPA. The results show that the LSS technology can fabricate diamond/Al composites without Al4C3, hence guaranteeing excellent mechanical and thermophysical properties. The higher TC of the diamond/Al composite with a Ti coating was attributed to the favorable metallurgical bonding interface compounds. Due to the non-wettability between diamond and Al, the TC of uncoated diamond particle-reinforced composites was only 149 W/m·K. The TC of Ti-coated composites increased by 85.9% to 277 W/m·K. A simultaneous comparison and analysis were performed on the features of composites reinforced by Ti and Cr coatings. The results suggest that the application of the Ti coating increases the bending strength of the composite, while the Cr coating enhances the TC of the composite. We calculate the theoretical TC of the diamond/Al composite by using the differential effective medium (DEM) and Maxwell prediction model and analyze the effect of Ti coating on the TC of the composite.

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“…Currently, the most ideal heat sink material is single-crystal diamond, but it is difficult to manufacture, limited in size, and costly. Therefore, other diamond composites are used, such as diamond/copper and diamond/aluminum [ 4 , 5 ]. However, the presence of thermal shocks may cause the diamond/metal interface to separate and thus reduce the heat dissipation effect.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Fabrication of Diamond/SiC Composites Using α-Si3N4/Si Infiltration

Xing,

Zhang,

Zhao

et al. 2023

Materials

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Diamond/SiC (Dia/SiC) composites possess excellent properties, such as high thermal conductivity and low thermal expansion coefficient. In addition, they are suitable as electronic packaging materials. This study mainly optimized the diamond particle size packing and liquid-phase silicon infiltration processes and investigated a method to prevent the adhesion of the product to molten silicon. Based on the Dinger–Funk particle stacking theory, a multiscale diamond ratio optimization model was established, and the volume ratio of diamond particles with sizes of D20, D50, and D90 was optimized as 1:3:6. The method of pressureless silicon infiltration and the formulas of the composites were investigated. The influences of bedding powder on phase composition and microstructure were studied using X-ray diffraction and scanning electron microscopy, and the optimal parameters were obtained. The porosity of the preform was controlled by regulating the feeding amount through constant volume molding. Dia/SiC-8 exhibited the highest density of 2.73 g/cm3 and the lowest porosity of 0.6%. To avoid adhesion between the sample and buried powder with the bedding silicon powder, a mixed powder of α-Si3N4 and silicon was used as the buried powder and the related mechanisms of action were discussed.

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Enhanced thermal conductivity and long-term stability of diamond/aluminum composites using SiC-coated diamond particles

Cited by 9 publications

References 31 publications

Mechanical Property and Corrosion Behavior of Powder-Metallurgy-Processed 3D Graphene-Networks-Reinforced Al Matrix Composites

Mechanical Property and Corrosion Behavior of Powder-Metallurgy-Processed 3D Graphene-Networks-Reinforced Al Matrix Composites

Improved Bending Strength and Thermal Conductivity of Diamond/Al Composites with Ti Coating Fabricated by Liquid–Solid Separation Method

Investigation of the Fabrication of Diamond/SiC Composites Using α-Si3N4/Si Infiltration

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