Multi-technique analysis of high quality HPHT diamond crystal

Fernández‐Lorenzo, Concha; Araújo, D.; González‐Mañas, M.; Martin, J. Holmes; Navas, Javier; Alcántara, Rodrigo; Villar, M. P.; Bagriantsev, D.

doi:10.1016/j.jcrysgro.2012.05.007

Cited by 14 publications

(5 citation statements)

References 28 publications

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“…1,2 The literature describing several structural defects is often based on Raman spectroscopy, 3 X-ray diffraction, 4 and cathodoluminescence 5 techniques. More rarely, transmission electron microscopy (TEM) has been employed, [6][7][8][9][10][11][12] due to the remarkable hardness of diamond, which makes the specimen preparation more difficult.…”

mentioning

confidence: 99%

Critical boron-doping levels for generation of dislocations in synthetic diamond

Alegre

Araújo

Fiori

et al. 2014

Applied Physics Letters

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International audienceDefects induced by boron doping in diamond layers were studied by transmission electron microscopy. The existence of a critical boron doping level above which defects are generated is reported. This level is found to be dependent on the CH 4 /H 2 molar ratios and on growth directions. The critical boron concentration lied in the 6.5–17.0 10 20 at/cm 3 range in the <111> direction and at 3.2 10 21 at/cm 3 for the <001> one. Strain related effects induced by the doping are shown not to be responsible. From the location of dislocations and their Burger vectors, a model is proposed, together with their generation mechanism

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confidence: 99%

Critical boron-doping levels for generation of dislocations in synthetic diamond

Alegre

Araújo

Fiori

et al. 2014

Applied Physics Letters

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“…To estimate the doping level in diamond, usually secondary ion mass spectroscopy (SIMS) [29,30] or cathodoluminescence [31,32] are used. However, these are very heavy experiments and recently, V. Mortet et al propose a simpler way to obtain the boron doping level in diamond: Raman spectroscopy, which is a fast and appropriate contactless characterization method.…”

Section: Introductionmentioning

confidence: 99%

Boron-Doped Diamond Growth on Carbon Fibre: Enhancing the Electrical Conductivity

Millán-Barba¹,

Bakkali²,

Lloret³

et al. 2022

SSRN Journal

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“…The diamond yields to breakage at these cleavage planes. 10, 11 This feature of differential hardness makes the diamond a unique tool material candidate in ultra-precision machining. In multiple diamond applications (of shearing, cleaving, and machining), their crystal geometry and hardness feature predominantly.…”

Section: Introductionmentioning

confidence: 99%

“…Figure11. Average and standard deviation data; roughness (Ra in nm) with tool-2; UPD tools versus CFT tool.Note: X-axis: UPD tools for progressive SPDT of PDPCs; Y-axis: roughness (Ra in nm).…”

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Study, analysis, and characterization of ultra-precision diamond tools for single-point diamond turning

Sarepaka¹,

Balan²,

Doodala³

et al. 2020

Journal of Micromanufacturing

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In multiple applications of advanced instrumentation, single-point diamond turning (SPDT) is a popular and effective process to generate novel surfaces with nanometric surface roughness and sub-micron surface irregularities, albeit at a high cost. In SPDT, precision diamond tooling contributes significantly to the process cost escalation. Hence, for SPDT, it is vital to have an optimal precision diamond tool deployment. In this article, details of comprehensive precision diamond tool selection and tool characterization are discussed. Three makes of selected ultra-precision diamond (UPD) tools and standard diamond tools (of a global make), designated as CFT, are considered for this study. In this tool bench-marking exercise, the fabrication of Cu–Be alloy predesigned precision components (PDPCs) of a critical geometry is selected. UPD and CFT tools are deployed to fabricate (under similar machining-metrology conditions) the PDPCs. These diamond tools are evaluated in terms of the quality parameters (variation in radius of curvature, form error, and surface roughness) of the workpieces. Further, to explore the progressive wear of these tools, multiple machining cycles are conducted on these workpieces, and their quality parameters are analyzed. Thus, the precision diamond tools of three makes are benchmarked against the CFT tool. Based on the final outcome of this analysis, suitable recommendations are provided to precision diamond tool manufacturers to improve their product in terms of performance and optimized costs to meet the ever-growing tooling demands of the SPDT community.

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Multi-technique analysis of high quality HPHT diamond crystal

Cited by 14 publications

References 28 publications

Critical boron-doping levels for generation of dislocations in synthetic diamond

Critical boron-doping levels for generation of dislocations in synthetic diamond

Boron-Doped Diamond Growth on Carbon Fibre: Enhancing the Electrical Conductivity

Study, analysis, and characterization of ultra-precision diamond tools for single-point diamond turning

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