Fabrication and application of nano–microcrystalline composite diamond films on the interior hole surfaces of Co cemented tungsten carbide substrates

Sun, Fei; Ma, Y.P.; Shen, Bin; Zhang, Zhiming; Chen, Ming

doi:10.1016/j.diamond.2008.10.064

Cited by 95 publications

(32 citation statements)

References 16 publications

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“…Diamond multilayers were already grown on cemented carbide substrates aiming improvements in the cutting tools performance [13][14][15][16][17]. Sun et al achieved an upgrade on the working lifetime of drawing dies by a factor of above 15, compared to uncoated ones [16].…”

Section: Introductionmentioning

confidence: 99%

Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings

Salgueiredo¹,

Abreu²,

Amaral³

et al. 2013

Wear

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The tribological response of multilayer micro/nanocrystalline diamond coatings grown by the hot filament CVD technique is investigated. These multigrade systems were tailored to comprise a starting microcrystalline diamond (MCD) layer with high adhesion to a silicon nitride (Si3N4) ceramic substrate, and a top nanocrystalline diamond (NCD) layer with reduced surface roughness. Tribological tests were carried out with a reciprocating sliding configuration without lubrication. Such composite coatings exhibit a superior critical load before delamination (130 -200 N), when compared to the mono-(60-100 N) and bilayer coatings (110 N), considering ∼10 mm thick films. Regarding the friction behaviour, a short-lived initial high friction coefficient was followed by low friction regimes (friction coefficients between 0.02 and 0.09) as a result of the polished surfaces tailored by the tribological solicitation. Very mild to mild wear regimes (wear coefficient values between 4.1 10 −8 and 7.7 10 −7 mm 3 N −1 m −1 ) governed the wear performance of the self-mated multilayer coatings when subjected to highload short-term tests (60-200 N; 2 h; 86 m) and medium-load endurance tests (60 N; 16 h; 691 m).

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Section: Introductionmentioning

confidence: 99%

Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings

Salgueiredo¹,

Abreu²,

Amaral³

et al. 2013

Wear

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“…However, diamond coatings on WC-Co drawing die is a formidable challenge due to the presence of cobalt binder [5,6], (which promotes the formation of graphite instead of diamond thereby completely mitigating the effect of a diamond coating) in addition to their complex geometry and weight, in realizing uniform coatings as well as characterizing the interior of the drawing die. Recently, Sun et al [7], reported an enhanced performance of NCD coated WC-Co dies for drawing copper tubes. In contrast to the soft metal copper, medium carbon steel tubes are more significant as they are extensively used in various industrial applications.…”

Section: Introductionmentioning

confidence: 98%

Nanocrystalline diamond coatings on the interior of WC–Co dies for drawing carbon steel tubes: Enhancement of tube properties

Chandran

Kumaran

Dumpala

et al. 2014

Diamond and Related Materials

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“…The chemical vapor deposition (CVD) diamond¯lm has been successfully utilized in a variety of mechanical components, such as cutting tools, [1][2][3][4][5] drawing dies, 6,7 mechanical seals, [8][9][10] grinding tools, 11 etc. Of these applications, however, depositing high-quality and uniform diamond¯lm in a large-area substrate is still a challenge due to the di±culty of generating highly consistent and uniform growth environment on a large area substrate surface, especially for those substrates with complex 3D-shaped surface, like drills or mills, etc.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Gas Inlet on the Fluid Field During Fabricating HFCVD Diamond-Coated Cutting Tools

Shen

Chen

Cheng³

et al. 2014

Surf. Rev. Lett.

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In the present study, the°uid¯eld in a process of fabricating diamond coated cutting tools using the hot¯lament chemical vapor deposition (HFCVD) method is investigated using the¯nite volume method (FVM), in which the e®ects of the inlet height, gas initial velocity, inlet radius and arrangement are illustrated in terms of the gas velocity magnitude and vector distribution near thē laments and the°ute surface of cutting tools. In the simulations, the coupling e®ect of the temperature and the gas¯eld is also considered by simultaneously calculating the temperature distribution. The simulation results suggest that either shortening the distance between the gas inlet and laments, or increasing the gas initial velocity is helpful for the reactive gas arriving at¯laments surface and being dissociated. Furthermore, increasing the inlet area is able to signi¯cantly increase the velocity of gas¯eld around the¯laments, as well as produce a much more uniform gas velocitȳ eld. Based on this conclusion, two novel multi-inlets setups are proposed to further improve the generated gas¯eld and the simulation results show that the most superior gas¯eld can be achieved with the one including 8 larger central inlets and 24 smaller outskirt inlets. Finally, an actual deposition experiment is carried out and its result indicates that adopting the optimized such inlet arrangement could generate a highly uniform and homogeneous growth environment on whole deposition area.

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Fabrication and application of nano–microcrystalline composite diamond films on the interior hole surfaces of Co cemented tungsten carbide substrates

Cited by 95 publications

References 16 publications

Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings

Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings

Nanocrystalline diamond coatings on the interior of WC–Co dies for drawing carbon steel tubes: Enhancement of tube properties

The Effect of the Gas Inlet on the Fluid Field During Fabricating HFCVD Diamond-Coated Cutting Tools

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