HPHT-Grown Near-Colourless Synthetic Diamond with Detectable GR1 Defect

It has been found that the abrasion of diamond-on-diamond depends on the crystal orientation. For a {100} face, the friction coefficient for sliding along <011> is much higher than that along <001>. For a {111} face, the abrasion along <11> is different from that in the reverse direction <>. To interpret these effects, a microcleavage mechanism was proposed in which the {100} and {111} surfaces were assumed to be composed of square-based pyramids and trigonal protrusions, respectively. Reflection electron microscopy (REM) has been applied to image the microstructures of these diamond surfaces.{111} surfaces of synthetic diamond:The synthetic diamonds used in this study were obtained from the De Beers Company. They are in the as-grown condition with grain sizes of 0.5-1 mm without chemical treatment or mechanical polishing. By selecting a strong reflected beam in the reflection high-energy electron diffraction (RHEED) pattern, the dark-field REM image of the surface is formed (Fig. 1).

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A Thick Overgrowth of CVD Synthetic Diamond on a Natural Diamond

The Journal of Gemmology ◽

10.15506/jog.2018.36.2.134 ◽

2018 ◽

Vol 36 (2) ◽

pp. 134-141

Author(s):

Shi Tang ◽

Jun Su ◽

Taijin Lu ◽

Yongwang Ma ◽

Jie Ke ◽

...

Keyword(s):

Synthetic Diamond ◽

Natural Diamond

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The First Undisclosed Colourless CVD Synthetic Diamond Discovered in a Parcel of Natural Melee-Sized Diamonds

The Journal of Gemmology ◽

10.15506/jog.2015.34.6.518 ◽

2015 ◽

Vol 34 (6) ◽

pp. 518-522 ◽

Cited By ~ 1

Author(s):

Thomas Hainschwang ◽

Franck Notari

Keyword(s):

Synthetic Diamond

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Identification of a CVD Synthetic Diamond with a 'Tree Ring' Growth Pattern

The Journal of Gemmology ◽

10.15506/jog.2015.34.8.702 ◽

2015 ◽

Vol 34 (8) ◽

pp. 702-710

Author(s):

Yan Lan ◽

Rong Liang ◽

Taijin Lu ◽

Yong Zhu ◽

Tianyang Zhang ◽

...

Keyword(s):

Tree Ring ◽

Growth Pattern ◽

Synthetic Diamond

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Effect of diamond burnishing parameters on the state of the processed surface layer of billets made of high-strength "30ХГСН2А-ВД" steel

10.36652/0042-4633-2020-5-82-86 ◽

2020 ◽

pp. 82-86

Author(s):

A.N. Shvetsov ◽

D.L. Skuratov

Keyword(s):

Surface Layer ◽

Residual Stresses ◽

Strain Hardening ◽

Processing Speed ◽

Synthetic Diamond ◽

High Strength ◽

The State ◽

Diamond Burnishing

The influence of the burnishing force, tool radius, processing speed and feed on the distribution of circumferential and axial residual strses, microhardness and the depth of strain hardening in the surface layer when pr ssing of "30ХГСН2А-ВД" steel with synthetic diamond "ACB-1" is considered. Empirical dependencies determining these parameters are given. Keywords diamond burnishing, strain hardening depth, circumferential residual stresses, axial residual stresses, microhardness. [email protected], [email protected]

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The Compacts of Boron-doped Synthetic Diamond: Methods for the Increasing of Their Electrochemical Activity

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2021.115203 ◽

2021 ◽

pp. 115203

Author(s):

Yu.V. Pleskov ◽

M.D. Krotova ◽

E.A. Ekimov

Keyword(s):

Synthetic Diamond ◽

Electrochemical Activity ◽

Boron Doped

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Effect of pressure on synthetic diamond crystals at high temperatures and pressures in Fe/Ni catalyst system

CrystEngComm ◽

10.1039/d0ce01452d ◽

2021 ◽

Author(s):

Shuai Fang ◽

Yongkui Wang ◽

Liangchao Chen ◽

Zhiyun Lu ◽

Zhenghao Cai ◽

...

Keyword(s):

Nitrogen Content ◽

Growth Mechanism ◽

Synthetic Diamond ◽

Natural Diamond ◽

Catalyst System ◽

Necessary Condition ◽

Ni Catalyst ◽

Effect Of Pressure ◽

Diamond Crystals ◽

System P

Pressure is a necessary condition for the growth of natural diamond. Studying the effect of pressure on the nitrogen content of diamond is important for exploring the growth mechanism of...

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