Double bias HF CVD multilayer diamond films on WC–Co cutting tools

Vojs, Marián; Veselý, M.; Redhammer, R; Janík, Ján; Kadlečíková, Magdaléna; Daniš, T.; Marton, Marián; Michalka, M.; Šutta, P.

doi:10.1016/j.diamond.2005.01.006

Cited by 35 publications

(14 citation statements)

References 12 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

View full text Add to dashboard Cite

show abstract

“…Most pretreatment steps involve two major steps, a chemical and/or mechanical pretreatment and a seeding treatment. Other methods of depositing NCD on substrates include adding a double bias between the substrate and filament [12][13][14], using dry detonation of nanodiamond powder [2], replacing the binder phase [15] and using interlayer [16] scratch, grind and polish to modify the surface roughness as it is known that diamonds nucleate spontaneously on defects. The defects increase the surface-to-volume fraction, leading to higher contact with precursor gases, thus leading to faster carbon saturation and lower total free energy.…”

Section: Introductionmentioning

confidence: 99%

Surface morphology and bond characterization of nanocrystalline diamonds grown on tungsten carbide via hot filament chemical vapor deposition

Hamzah

Yong

Yajid

2013

Journal of Crystal Growth

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“…In such cases, the size of the diamond crystals is limited to nanoscale dimensions and does not increase with a prolonged deposition time (Zhou et al , 2002;Vojs et al , 2005).…”

Section: Double Biasingmentioning

confidence: 99%