Preparation of copper–diamond composites with chromium carbide coatings on diamond particles for heat sink applications

Kang, Qiping; He, Xinbo; Ren, Shan; Zhang, Lin; Wu, Mao; Guo, Caiyu; Cui, Wei; Qu, Xuanhui

doi:10.1016/j.applthermaleng.2013.05.038

Cited by 126 publications

(41 citation statements)

References 19 publications

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“…For Cu, adding alloying elements such as B, Cr [6,10], or Zr [11], to the matrix metal, yield high composite thermal conductivities, presumably through the formation of a small amount of interfacial carbide [12]. Coating the powder before processing it into a composite has been achieved by sputtering of Mo [13], by the molten salt route [14,15], or by vapor phase deposition of W [16]. The latter process has led to particularly high thermal conductivity of up to 907 Wm −1 K −1 for 100nm thick coatings, while thicker coatings reduced the beneficial effect.…”

Section: Introductionmentioning

confidence: 99%

Thermal boundary conductance between refractory metal carbides and diamond

Monachon

Weber

2014

Acta Materialia

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The Thermal Boundary Conductance (TBC) between thin films of Cr, Mo, Nb and W and diamond substrates has been measured using time domain thermoreflectance before and after a high-vacuum heat treatment at 800 o C for 2 h. While no signs of carbide formation could be detected in as-deposited layers by Scanning Transmission Electron Microscopy Energy Dispersive Xray spectroscopy (STEM-EDX) elemental analysis, the heat treatment led to partial (W, Mo) or full conversion (Cr, Nb) of the film into carbide. The measured TBC values on as-deposited samples of 315, 220, 220 and 205 MWm −2 K −1 measured for, respectively, the Cr, Mo, Nb and W samples, were found to not be significantly altered by the heat treatment.

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Section: Introductionmentioning

confidence: 99%

Thermal boundary conductance between refractory metal carbides and diamond

Monachon

Weber

2014

Acta Materialia

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“…Diamond-reinforced MMCs are novel materials in which the metallic phase acts as a binder, while the diamond phase helps to improve the material properties. Currently, the common ways to fabricate bulk diamond-reinforced MMCs or MMC coatings are powder metallurgy [95][96][97][98][99], pressure infiltration techniques [100][101][102][103][104], and thermal spray techniques [105][106][107][108][109]. ese methods mostly require extremely high processing temperatures to melt the metal binder, thereby significantly increasing the risk of the metal phase transformation and diamond graphitization [97].…”

Section: Diamond-reinforced MMC Coatingsmentioning

confidence: 99%

Cold‐Sprayed Metal Coatings with Nanostructure

Yin

Chen

Suo

et al. 2018

Advances in Materials Science and Engineering

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Cold spray is a solid-state coating deposition technology developed in the 1980s. In comparison with conventional thermal spray processes, cold spray can retain the original properties of feedstock, prevent the adverse influence on the underlying substrate materials, and produce very thick coatings. Coatings with nanostructure offer the potential for significant improvements in physical and mechanical properties as compared with conventional non-nanostructured coatings. Cold spray has also demonstrated great capability to produce coatings with nanostructure. is paper is aimed at providing a comprehensive overview of cold-sprayed metal coatings with nanostructure. A brief introduction of the cold spray technology is provided first. e nanocrystallization phenomenon in the conventional cold-sprayed metal coatings is then addressed. ereafter, focus is switched to the microstructure and properties of the cold-sprayed nanocrystalline metal coatings, and the cold-sprayed nanomaterialreinforced metal matrix composite (MMC) coatings. At the end, summary and future perspectives of the cold spray technology in producing metal coatings with nanostructure are concluded.

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“…18 The effect of chromium carbide (Cr 7 C 3 ) coatings on diamond particles for improving the wettability in the case of diamond reinforced copper matrix composite has been investigated. 22,23 The poor adhesion and high stress level for diamond or diamond like carbon on a metallic substrates is found to be dependent on the difference in coefficients of thermal expansion between the film and the substrate. [24][25][26] However, the study of such effect in the case of CVD coated diamond for thermal management applications is scarce.…”

Section: Introductionmentioning

confidence: 99%

FEM thermal analysis of Cu/diamond/Cu and diamond/SiC heat spreaders

Denu

Mirani

et al. 2017

AIP Advances

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The effects of thermal stress resulting from thermal cooling in copper/diamond/copper heat spreader is investigated using finite element method. A similar model of diamond/SiC heat spreader is compared without addition of interlayer. The effect of carbide interlayer in reduction of interfacial thermal stress is investigated. The results show that the carbide interlayer film thickness is critical in stress reduction for a copper/diamond/copper heat spreader device. Diamond/SiC device has lower interfacial stress without interlayer. The study of mechanical and thermal property of diamond heat spreader is useful for optimal designs of efficient heat spreader for electronic components.

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Preparation of copper–diamond composites with chromium carbide coatings on diamond particles for heat sink applications

Cited by 126 publications

References 19 publications

Thermal boundary conductance between refractory metal carbides and diamond

Thermal boundary conductance between refractory metal carbides and diamond

Cold‐Sprayed Metal Coatings with Nanostructure

FEM thermal analysis of Cu/diamond/Cu and diamond/SiC heat spreaders

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