Thermal properties of SiC-bonded diamond materials produced by liquid silicon infiltration

Matthey, Björn; Kunze, S.; Kaiser, Alexander; Herrmann, Matthias

doi:10.1016/j.oceram.2023.100386

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…Diamond‐SiC composites are extremely wear‐resistant materials. They show very good mechanical 13 and thermal properties 11 and therefore excellent prerequisites for use in seals and bearings in extremely harsh environments. One key is the very good interfaces 17 in the composites for both processing routes: conventional pressing technology or the newly developed inlay technology.…”

Section: Discussionmentioning

confidence: 99%

“…The most promising route is the infiltration technology with liquid silicon, 7–10 which is well‐known for silicon‐infiltrated silicon carbide (SiSiC). In this way, materials with a wide range of different microstructures and properties can be achieved 11 . In recent years the knowledge of diamond‐SiC composites and their properties were investigated more in detail 12,13 …”

Section: Introductionmentioning

confidence: 99%

“…In this way, materials with a wide range of different microstructures and properties can be achieved. 11 In recent years the knowledge of diamond-SiC composites and their properties were investigated more in detail. 12,13 In order to achieve large-sized components with economic production processes, graded or layered composites should be preferred that reduce the amount of diamond drastically.…”

Section: Introductionmentioning

confidence: 99%

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SiC‐bonded diamond ceramics for extreme conditions in subsea applications

Kailer,

Matthey,

Kunze

et al. 2024

Int J Applied Ceramic Tech

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Extremely reliable and wear‐resistant components are required for subsea pump applications. For this purpose, materials and components were developed and qualified within the framework of a joint project1, which under media lubrication with water containing particles, exhibit the highest possible wear resistance and can thus achieve the longest possible service life. The developed SiC‐bonded diamond ceramics have diamond contents of up to 60 % by volume and can be manufactured in the form of a solid material or as graded components containing diamonds only in the tribologically stressed areas. The results show that the investigated diamond‐containing ceramics are very suitable for media‐lubricated sliding bearings and mechanical seals in subsea applications. The friction values under media lubrication are very stable and independent of tribological loads. In mechanical seal application, SiC‐bonded diamond shows significantly better friction performance than the reference material SiC. An outlook is given on demonstrator tests that are currently in preparation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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SiC‐bonded diamond ceramics for extreme conditions in subsea applications

Kailer,

Matthey,

Kunze

et al. 2024

Int J Applied Ceramic Tech

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“…Higher TC than existing thermal management materials (such as Invar, Cu/W, Si/Al, SiC/Al, etc.) is needed to meet the urgent heat dissipation requirements of large-scale integrated circuits [4,5]. Although the TC of pure Al can reach 237 W/m•K, this is sufficient for conventional electronic packaging environments.…”

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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