Sharp Ge-vacancy colour centre emission from nanocrystalline CVD diamond films

2019 ◽  
Author(s):  
R. Mary Joy ◽  
T. Chakraborty ◽  
P. Pobedinskas ◽  
M. Nesládek ◽  
K. Haenen
Keyword(s):  
Diamond Films ◽  
Cvd Diamond ◽  
Colour Centre

PTIS investigation of hydrogenated CVD diamond films

2005 ◽  
Vol 202 (11) ◽  
pp. 2171-2176 ◽  
Author(s):  
A. Hikavyy ◽  
P. Clauws ◽  
W. Deferme ◽  
G. Bogdan ◽  
K. Haenen ◽  
...  
Keyword(s):  
Diamond Films ◽  
Cvd Diamond

Enhanced Tribological Performance of CVD Diamond Films Enabled by Using Graphene Layers as Solid Lubricant

2016 ◽  
Vol 1136 ◽  
pp. 573-578 ◽  
Author(s):  
Su Lin Chen ◽  
Bin Shen ◽  
Fang Hong Sun
Keyword(s):  
Tungsten Carbide ◽  
Solid Lubricant ◽  
Diamond Films ◽  
Cvd Diamond ◽  
Tribological Performance ◽  
Chemical Vapor Deposition Method ◽  
Dry Sliding ◽  
Graphene Layers ◽  
Sliding Interface ◽  
Graphene Flakes

The present study reports the influence of graphene layers on the tribological performance of CVD diamond films when they are used as the solid lubricants. Friction tests are conducted on a ball-on-plate friction tester, where the stainless steel is used as the counterpart material. The CVD diamond film sample is a typical microcrystalline diamond (MCD) coating which is deposited on a flat tungsten carbide substrate using the hot filament chemical vapor deposition method (HFCVD). Besides the MCD sample, a polished MCD film (pMCD) and a polished tungsten carbide (pWC) are also adopted in frictional tests, aiming at illustrating the influence of the surface morphology, as well as the physical property, of the sample on the lubricative effect of graphene layers. The experimental results show that graphene layers can effectively reduce the coefficient of friction (COF), regardless of the samples. The MCD sample presents the lowest stable COF, which is 0.13, in dry sliding period when the graphene flakes are sparyed on the sliding interface; while the pMCD and pWC samples exhibit slightly higher COFs, which are 0.16 and 0.18, respectively. Comparatively, the COFs of these three samples obtained in dry sliding process without graphene are 0.20, 0.25 and 0.64. In additon, the MCD sample exhibits a much longer stable dry slidng process which is more than 5000 cycles. Comparatively, the other two tribo-pairs only exhibit a stable low-COF dry sliding period for around 2000 cycles. The reduction of COF could be attributed to the graphene flakes adhered on the sliding interface. It forms a layer of solid lubricative film with extremely low shear strength and significantly decreases the interactions between two contacted surfaces. The rugged surface of the MCD film provides sufficient clogging locations for graphene flakes, which allows the generated lubricative film enduring a long sliding duration. It can be arrived from this study that the tribological properties of the MCD film could be enhanced by simply adoping graphene layers as a solid lubricant. Furthermore, an improved performance of a variety of MCD coated cutting tools or mechanical components could be expected when they are utilized with graphene layers.

Application of Ion Beam Enhanced Deposition to Metallization of CVD Diamond Films

1998 ◽  
Vol 169 (1) ◽  
pp. R5-R6 ◽  
Author(s):  
N. B. Wong ◽  
G. Q. Li ◽  
S. M. Zhu ◽  
S. C. Tjong ◽  
S. T. Lee
Keyword(s):  
Ion Beam ◽  
Diamond Films ◽  
Cvd Diamond

Interface formation and properties of α-NPD thermally deposited on CVD diamond films

2003 ◽  
Vol 216 (1-4) ◽  
pp. 106-112 ◽  
Author(s):  
Min-Seung Chun ◽  
Tokuyuki Teraji ◽  
Toshimichi Ito
Keyword(s):  
Diamond Films ◽  
Cvd Diamond ◽  
Interface Formation

scholarly journals Thick heavily boron doped CVD diamond films homoepitaxially grown on (111)-oriented substrates

2017 ◽  
Vol 79 ◽  
pp. 108-111 ◽  
Author(s):  
A. Boussadi ◽  
A. Tallaire ◽  
O. Brinza ◽  
M.A. Pinault-Thaury ◽  
J. Achard
Keyword(s):  
Diamond Films ◽  
Cvd Diamond ◽  
Boron Doped

Study of the Interface Microstructures of CVD Diamond Films by TEM

2000 ◽  
Vol 132 (2-4) ◽  
pp. 315-321 ◽  
Author(s):  
Alexander G. Fitzgerald ◽  
Yongchang Fan ◽  
Phillip John ◽  
Clare E. Troupe ◽  
John I. B. Wilson ◽  
...  
Keyword(s):  
Diamond Films ◽  
Cvd Diamond

Crystalline perfection of chemical vapor deposited diamond films

1990 ◽  
Vol 5 (8) ◽  
pp. 1591-1594 ◽  
Author(s):  
A. V. Hetherington ◽  
C. J. H. Wort ◽  
P. Southworth
Keyword(s):  
Grain Boundaries ◽  
Microwave Plasma ◽  
Diamond Films ◽  
Stacking Faults ◽  
Chemical Vapor ◽  
Cvd Diamond ◽  
Growth Conditions ◽  
Crystalline Perfection ◽  
Planar Defects ◽  
Chemical Vapor Deposited

The crystalline perfection of microwave plasma assisted chemical vapor deposited (MPACVD) diamond films grown under various conditions has been examined by TEM. Most CVD diamond films thus far reported contain a high density of defects, predominantly twins and stacking faults on {111} planes. We show that under appropriate growth conditions, these planar defects are eliminated from the center of the crystallites, and occur only at grain boundaries where the growing crystallites meet.

Investigation of hydrogenated CVD diamond films by photo-thermal ionization spectroscopy

2006 ◽  
Vol 15 (4-8) ◽  
pp. 682-686 ◽  
Author(s):  
A. Hikavyy ◽  
P. Clauws ◽  
W. Deferme ◽  
G. Bogdan ◽  
K. Haenen ◽  
...  
Keyword(s):  
Diamond Films ◽  
Cvd Diamond ◽  
Thermal Ionization

Piezoresistive property of CVD diamond films

1997 ◽  
Vol 6 (2-4) ◽  
pp. 367-373 ◽  
Author(s):  
Masahiro Deguchi ◽  
Nobuhiro Hase ◽  
Makoto Kitabatake ◽  
Hidetoshi Kotera ◽  
Susumu Shima ◽  
...  
Keyword(s):  
Diamond Films ◽  
Cvd Diamond
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