[100]-Textured diamond films for tribological applications

Avigal, Y.; Glozman, O.; Etsion, I.; Halperin, G.; Hoffman, A.

doi:10.1016/s0925-9635(96)00625-5

Cited by 40 publications

(31 citation statements)

References 5 publications

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“…highest hardness, highest known value of thermal conductivity at 300 K, wide band gap (∼5.5 eV), and broad optical transparency from deep ultraviolet to far infrared), polycrystalline diamond films have attracted increasing attention [1][2][3][4][5]. Since the properties of a diamond crystal depend on the crystallographic direction, it is important to understand the effect of film deposition parameters on the evolution of the crystallographic orientation distribution (texture) and microstructure [6][7][8][9][10][11][12][13][14][15]. For instance, in the field of mechanical properties and wear, it was observed that [100]-oriented films exhibit lower roughness and higher wear resistance than those in other crystallographic directions, which renders them suited for tribological applications [13] 1 .…”

Section: Introductionmentioning

confidence: 99%

“…Since the properties of a diamond crystal depend on the crystallographic direction, it is important to understand the effect of film deposition parameters on the evolution of the crystallographic orientation distribution (texture) and microstructure [6][7][8][9][10][11][12][13][14][15]. For instance, in the field of mechanical properties and wear, it was observed that [100]-oriented films exhibit lower roughness and higher wear resistance than those in other crystallographic directions, which renders them suited for tribological applications [13] 1 . 100 -textured films are also ideal for heat-transport applications since the heat conductivity in the crystallographic 100 direction exceeds that in the 111 and 110 directions [9,10].…”

Section: Introductionmentioning

confidence: 99%

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A 3D tomographic EBSD analysis of a CVD diamond thin film

Liu

Raabe

Zaefferer

2008

Science and Technology of Advanced Materials

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We have studied the nucleation and growth processes in a chemical vapor deposition (CVD) diamond film using a tomographic electron backscattering diffraction method (3D EBSD). The approach is based on the combination of a focused ion beam (FIB) unit for serial sectioning in conjunction with high-resolution EBSD. Individual diamond grains were investigated in 3-dimensions particularly with regard to the role of twinning.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 3D tomographic EBSD analysis of a CVD diamond thin film

Liu

Raabe

Zaefferer

2008

Science and Technology of Advanced Materials

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“…3 Nitrogen addition gives diamond a yellow tarnish and increases the defect content, resulting in a negative influence on various physical properties. 4 Regarding the advantages, a small amount of nitrogen favors a ͗100͘ growth texture, 3,5 which has lower roughness, 6 higher wear resistance, and higher heat conductivity 7,8 than other crystallographic directions. Also, a limited incorporation of nitrogen seems to promote the deposition rate.…”

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confidence: 99%

Influence of nitrogen doping on growth rate and texture evolution of chemical vapor deposition diamond films

Liu

Raabe

2009

Applied Physics Letters

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Chemical vapor deposition ͑CVD͒ diamond films were prepared using a variation in nitrogen addition into the gas source admixture by a direct current CVD method. The influence of nitrogen addition on the crystallographic texture and grain shape evolution in heteroepitaxial polycrystalline diamond films was investigated using high-resolution electron backscattering diffraction and x-ray diffraction. The analysis reveals that an addition of 1.5% N 2 to the CH 4 gas flow leads to a strong enhancement in a ͕110͖ fiber texture. The phenomenon is discussed in terms of a competitive growth selection mechanism. © 2009 American Institute of Physics. ͓DOI: 10.1063/1.3072601͔ Studies on diamond films are of high relevance as they are increasingly used as semiconductor in electronic devices such as ultraviolet light emitting diode, high-speed switches, and high-power transistors. Nitrogen-doped diamond is a n-type semiconductor while boron-doped diamond is p-type. Usually, it is more practical to synthesize n-type semiconducting chemical vapor deposition ͑CVD͒ diamond because the high boiling point of boron prevents its incorporation into diamond. Nitrogen incorporation into the deposition atmosphere has drawbacks and benefits. Concerning the disadvantages, the existence of nitrogen reduces the thermal conductivity and the optical transparency.1,2 In addition, nitrogen has a high solubility in diamond and is found to be either concentrated in small precipitates ͑type Ia͒ or dispersed on substitutional atomic sites ͑type Ib͒.3 Nitrogen addition gives diamond a yellow tarnish and increases the defect content, resulting in a negative influence on various physical properties. 4 Regarding the advantages, a small amount of nitrogen favors a ͗100͘ growth texture, 3,5 which has lower roughness, 6 higher wear resistance, and higher heat conductivity 7,8 than other crystallographic directions. Also, a limited incorporation of nitrogen seems to promote the deposition rate.9-11 Thus, it is important to understand the influence of nitrogen additions in order to take advantage of the benefits and avoid the disadvantages during diamond film synthesis. Corresponding studies have been conducted using characterization by secondary ion mass spectroscopy, 2 Raman spectroscopy, 3,4 and x-ray diffraction ͑XRD͒. 3This paper presents an investigation on the growth rate and the crystallographic texture of diamond as a function of nitrogen additions. We used a high-power direct current arc plasma jet method, operated in gas recycling mode to prepare large-scale freestanding CVD diamond films.11-13 Sets of films were deposited using variations in nitrogen addition ranging from 0.5% to 3.5% N 2 / CH 4 . The molybdenum ͑Mo͒ substrates were kept at 1050°C ͑Ϯ20 K͒ during deposition. The ratio of methane to hydrogen in the feeding flow was 1.6%. The N 2 / CH 4 ratios in the feeding flow were set to 0.5%, 1.5%, 2.5%, and 3.5%, respectively. Since the roughness of the substrate promotes nucleation, 14,15 the substrates were polished using diamond powder and ...

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“…The use of CrN as an interlayer has been extensively studied [8,[20][21][22][23][24][25][26][27]. Some authors have also used multilayer systems, such as Ni/Cu/Ti [28], Ni/diamond embedded crystallites/Cu [28] and TiC/Ti(C,N)/TiN [14] to improve diamond adhesion on steel.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nanodiamond Coating on Steel

et al. 2013

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Abstract:The hardness, heat conductivity and low friction coefficient of microcrystalline diamond make it a suitable candidate for tribological applications. However, its roughness and high deposition temperature pose significant obstacles to these applications. We have successfully grown nanocrystalline diamond on steel at 400 °C by hot-filament chemical vapor deposition by employing a CrN interfacial layer. Nanocrystalline diamond combines hardness and surface smoothness required in tribological applications. Microcrystalline diamond and carbon nanotubes can also be grown by controlling the deposition parameters. The fabricated films were characterized with Raman spectroscopy, X-ray diffraction (XRD), Transmission electron microscopy (TEM), and scanning electron microscopy (SEM).

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[100]-Textured diamond films for tribological applications

Cited by 40 publications

References 5 publications

A 3D tomographic EBSD analysis of a CVD diamond thin film

A 3D tomographic EBSD analysis of a CVD diamond thin film

Influence of nitrogen doping on growth rate and texture evolution of chemical vapor deposition diamond films

Fabrication of Nanodiamond Coating on Steel

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