Raman scattering, AFM and nanoindentation characterisation of diamond films obtained by hot filament CVD

Yanchuk, I. B.; Valakh, M. Ya.; Vul, A. Ya.; Golubev, V. G.; Grudinkin, S. A.; Feoktistov, N. A.; Richter, Asta; Wolf, B.

doi:10.1016/j.diamond.2003.11.001

Cited by 37 publications

(19 citation statements)

References 10 publications

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“…The films were grown by the methods of hot filament (HFCVD) and microwave deposition (MWCVD) in a hydrogen-methane gas mixture by the technique described previously in [12,13]. The experimental conditions of film deposition are presented in Table 1.…”

mentioning

confidence: 99%

Determining the content and binding energy of hydrogen in diamond films

Polyanskiy¹,

Polyanskiy

Yakovlev

et al. 2015

Tech. Phys. Lett.

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mentioning

confidence: 99%

Determining the content and binding energy of hydrogen in diamond films

Polyanskiy¹,

Polyanskiy

Yakovlev

et al. 2015

Tech. Phys. Lett.

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“…These make the nanodiamond to have special optical, thermal and magnetic properties. It has been extensively researched and applied in the fields of composite coating [6,7], grinding [8], polishing [9], lubrication, photographic materials, high-strength resin and rubber, nanocomposite [10][11][12], seeds, drugs [13], thin film for nanotechnology [14,15] and so on.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the nanodiamond particle fabricated by detonation

Zou

Wang

2010

Journal of Experimental Nanoscience

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In order to comprehensively analyse the structures and the surface states of the nanodiamond particles fabricated by detonation, various apparatus were used to investigate the nanodiamond powder including a high-resolution transmission electron microscope, an energy diffraction spectrometer, an X-ray diffractometer, a Raman spectrometer, a Fourier transform infrared spectrometer and differential scanning calorimeter. The grain size of the nanodiamond particles was in the range of 2-12 nm. However, the average grain size of the nanodiamond was approximately 5 nm. Moreover, the shapes of the nanodiamond particles were spherical or elliptical. The nanodiamond as fabricated was very pure, containing almost only the element of carbon. The contents of the impure element including O, Al and S were very small, which came from the synthesis and purification processes when fabricating the nanodiamond. The surfaces of the nanodiamond particles absorbed many functional groups, such as hydroxy, carbonyl, carboxyl and ether-based resin. The initial oxidation temperature of the nanodiamond powder in the air was about 520 C, which was lower than that of the bulk diamond. However, the oxidation temperature of the nanographite existing in the nanodiamond powder was about 228 C. The graphitisation temperature of the nanodiamond powder in the Ar gas was approximately 1305 C.

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“…Despite the degree of error, a significant trend was observed for both hardness and elastic modulus.The hardness and elastic modulus were shown to increase with deposition temperature. In both cases the hardness and modulus transition from values that are consistent with graphitic carbon (15 ± 10 and 450 ± 200GPa) at 600 °C to nanostructured diamond film values (32 ± 12 and 600 ± 200GPa) at 800 °C then to microcrystalline hardness and modulus (60 ± 10 and 700 ± 200) at 1000 °C [25][26][27]. Previous reported research on nanoindentation hardness and modulus of nanostructured diamond films has varied widely and is heavily dependent on the deposition method [28].…”

Section: 4nanoindentation Hardnessmentioning

confidence: 91%

Improved nanostructured diamond adhesion on cemented tungsten carbide with boride interlayers

Johnston

Baker

Catledge

2016

Diamond and Related Materials

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The application of diamond coatings for strengthening cemented tungsten carbide has been previously attempted, but suffers from delamination. Plasma enhanced chemical vapor deposition boriding improves the strength of cemented carbides by forming WCoB, W 2 CoB 2 , and/or CoB phases using controllable diborane stoichiometry;this research exploresthese borides as interlayers for nanostructured diamond coatings. Diamond deposition occurred between 600 °C and 1100 °C at 100 °C increments for 30 min to 4 hrs. Raman spectroscopy showed enhanced diamond growth compared to untreated WC-Co,however predominantlyWCoB and CoBphase interlayerssuffered from diamond film delamination. Examination by scanning electron microscopy and energy dispersive X-ray spectroscopy showed interfacial cobalt clusters on these interlayers. Predominantly W 2 CoB 2 phase interlayers showed improvement with a reduction in reactive cobalt, and improved adhesion of nanostructured diamond coatings. Diamond on W 2 CoB 2 was well adhered with deposition temperature dependentnanoindentationhardness ranging from 10 to 60 GPaand elastic modulus of 400 to 750 GPa. Scratch testing revealed cohesiveand adhesive failure of the diamond coatings at 5N ± 2N and 8N ±2N respectively and epoxy pull testing resulted in a surface adhesion tensile strength of 8.2 MPa ± .1MPa. The W 2 CoB 2 phaseis shown to be desirable as an interlayer for improved nanostructured diamondadhesion on cemented tungsten carbide.

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Raman scattering, AFM and nanoindentation characterisation of diamond films obtained by hot filament CVD

Cited by 37 publications

References 10 publications

Determining the content and binding energy of hydrogen in diamond films

Determining the content and binding energy of hydrogen in diamond films

Analysis of the nanodiamond particle fabricated by detonation

Improved nanostructured diamond adhesion on cemented tungsten carbide with boride interlayers

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