Synthesis and characterization of the diamond/copper composites produced by the pulse plasma sintering (PPS) method

Rosiński, M.; Ciupiński, Ł.; Grzonka, J.; Michalski, A.; Kurzydłowski, K. J.

doi:10.1016/j.diamond.2012.05.008

Cited by 37 publications

(24 citation statements)

References 19 publications

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“…Composites of diamond with different materials were prepared: with pyrolytic carbon, SiC, SiCSi, Ag, Cu, and epoxy . Diamond/carbon nanocomposite was prepared by filling pyrolytic carbon into the spaces between nanodiamond particles (about 6 nm in size), of which the κ RT value was in the range of 0.3–1.7 Wm −1 K −1 .…”

Section: Materials With High Thermal Conductivitymentioning

confidence: 99%

Thermal Management Material: Graphite

Kaburagi²,

2014

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Graphite has pronounced anisotropy in its properties. Thermal conductivity of graphite crystal is extremely high along its layer plane, as high as 2000 Wm À1 K À1 , much higher than metals, and very low across its layer plane, as low as 7 Wm À1 K À1 . This anisotropy gives high possibility for graphite as thermal management materials. Here, graphite membranes with high thermal conductivity along the surface for heat dissipation and with low conductivity perpendicular to the surface for heat insulation, in addition to graphite foams as container of phase change materials for heat energy storage, are reviewed, particularly referring to the preparations of various graphite materials. Thermal conductivity of diamond crystal is also high, 2500 Wm À1 K À1 , but it is very sensitive for structural defects, but that of graphitic materials is less sensitive for structural defects, suggesting that the latter is more practical for thermal management than the former.(along the layer plane) as %2000 Wm À1 K À1 , [1] much higher than metals, such as Cu and Ag, but very small k RT along the c-axis (perpendicular to the layer plane) as around 6-9 Wm À1 K À1[2] : graphite crystal can be highly conductive along the layer and be highly insulating perpendicular to the layer. This pronounced anisotropy is due to graphite structure, graphite layer consisting of strong s bonding, and parallel stacking of these layers by van der Waals bonding due to the interaction between p-electron clouds on neighboring layers. Diamond crystal, which consists of carbon atoms using sp 3 CÀ ÀC bonding, is isotropic and has the highest value of k RT in solids as %2200 Wm À1 K À1 . [3] Highly graphitized carbon materials exhibit very high thermal conductivities. A highly-oriented pyrolytic graphite (HOPG) is reported to have k RT of 1950 Wm À1 K À1 . [1,4] Recently, graphite films with high thermal conductivity have become commercially available for dissipating heat from electronic devices containing integrated circuits, such as personal computers and mobile phones. [5] The k RT of the commercially available graphite films is reported to be more than 1600 Wm À1 K À1 , more than four times higher than the values of Ag, which is known to have the highest k RT among metals. Carbon/carbon composites prepared from natural graphite flakes by using mesophase pitch as binder, followed by heat treatment at high temperatures, gives k RT of about 650 Wm À1 K À1 , higher than Ag. In order to develop practical materials having k high enough, the preparation of highly oriented and highly crystallized graphite is essential. Flexible graphite sheets prepared from natural graphite via [*] Prof. M. InagakiProfessor Emeritus

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Section: Materials With High Thermal Conductivitymentioning

confidence: 99%

Thermal Management Material: Graphite

Kaburagi²,

2014

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“…Kang et al [17] used energy dispersive spectroscopy (EDS) to roughly characterize the Cu/Cr interface in Cu/Crdiamond composites. Based on modern technology, a direct way to obtain TEM foils containing a Cu/Ti interface is the use of focused ion beam (FIB) [18]. Schubert et al [4] utilized FIB to fabricate TEM foils and characterized the Cu/Cr interface in the Cu/Cr-diamond composites.…”

Section: Introductionmentioning

confidence: 99%

Interface characterization of a Cu–Ti-coated diamond system

Lin

Wang

Zhang

et al. 2015

Surface and Coatings Technology

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“…The distinctive feature of PPS lies on the extremely high current of several tens kA obtained by capacitor discharging. The fast energy release (several kJ in just a few hundred microseconds) accelerates the consolidation processes while preserving fine microstructures [14,15].…”

Section: Introductionmentioning

confidence: 99%