CVD Uncut Raw Diamonds Wholesale
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Price:
Negotiable
- minimum:
- Total supply:
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Delivery term:
The date of payment from buyers deliver within days
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seat:
Beijing
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Validity to:
Long-term effective
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Last update:
2023-10-23 12:05
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Browse the number:
139
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ENTASK SEMITEK
- Contactaixin:
yingtesike(Mr.)
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Email:
telephone:
phone:
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Arrea:
Beijing
Address:3-C3, 4555 South Guangyuntan Ave, 710021, Xi’an, Shaanxi, China.
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Website:
http://www.entasksemitek.com/ http://yingtesike.hq-huaqiao.com/
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CVD Uncut Raw Diamonds Wholesale
ENTASK is using the most smart CVD reactors fully automatically controlled, with the utmost complicated sensing and control system. The fabrication of ENTASK's CVD rough diamonds involves no manual control and the smart system are programmed to utilizing the best approaches that come from thousands of laboratory tests and experiments to make sure the growth of ENTASK's diamonds are following the optimized parameters like pressure, temperature and gas flows.
Available Sizes, mm |
7x7, 9x9, 10x10, 12x12, 15x15 |
Thickness |
As negotiated |
Nitrogen Content |
< 0.001% |
Inclusions |
None |
Color |
Colorless, yellow, pink, red, brown, grey, blue, black |
Theoretically, the infrared transmittance of diamond is as high as 71 percent, while that of ENTASK's diamonds is more than 69 percent.
Live Broadcast of Diamond Continuous Growth Online Anywhere of the Globe
ENTASK offers live broadcast of the full process of your diamonds, growing from seeds into the desired thick block of rough diamond.
As long as you are connected to the internet, you can watch the whole process of the diamonds growth online and check how much they have grown.
Lab Grown Diamond |
Mined Diamond |
|
Is it a Diamond? |
Yes |
Yes |
Is it Real? |
Yes |
Yes |
What is its Source? |
Greenhouse |
Mines |
Is it Eco-conscious? |
Yes |
No |
What is its life Expectancy? |
Forever |
Forever |
Is it Artificial? |
No |
No |
Is it a conflict Diamond? |
No |
Maybe |
Engages child Labor? |
No |
Maybe |
Can it be Customized? |
Yes |
Maybe |
Is it Affordable? |
Yes |
Maybe |
Can it meet quantity Demands? |
Yes |
Maybe |
ENTASK's CVD diamonds is of mono-crystalline, Types IIa, which remains our present main product. As a rare jewelry-grade diamond variety, it is also an ideal material for optical windows.
CVD Diamond Semiconductivity Property
Thanks to the super high charge transfer rate, the maximal heat conductivity among the semiconductors, the diamond-based semiconductor devices can operate in harsh environments such as high frequency, high power, or high voltage. So, diamond is an advantageous semiconductor material.
Property Item |
ENTASK Diamonds |
Thermal Conductivity (W / (cm • K)) |
20 |
Band Gap (eV) |
5.47 |
Breakdown Field (MV / cm) |
5~10 |
Electron Mobility (cm² / (V • s)) |
4500 |
Hole Mobility (cm² / (V • s)) |
3800 |
Electron Saturation Velocity (cm / s) |
2 X 10â· |
Hole Saturation Velocity (cm / s) |
0.8 X 10â· |
Optical Properties
Theoretically, the infrared transmittance of the diamond is as high as 71 percent, while ENTASK's diamonds have an infrared transmittance of over 69 percent.
As a wide-band gap semiconductor (Egap= 5.47 eV), a diamond boasts good transmission from vacuum ultraviolet (227nm) to far-infrared and microwave (millimeter band), except the absorption peak at 3~5μm caused by phonon vibration. Its excellent thermal shock resistance is attributed to ultra low thermal expansion coefficient with chemical inertness and wear resistance, as well as high thermal conductivity. Thanks to its low absorption coefficient, high laser damage threshold and high thermal conductivity, the diamond’s thermal lens effect as the laser output window is 200 times lower than that of the ZnSe window. The low atomic number makes the diamond nearly transparent to X-ray. So, diamond is an ideal infrared optical window material.
As a wide-band gap semiconductor (Egap= 5.47 eV), a diamond boasts good transmission from vacuum ultraviolet (227nm) to far-infrared and microwave (millimeter band), except the absorption peak at 3~5μm caused by phonon vibration. Its excellent thermal shock resistance is attributed to ultra low thermal expansion coefficient with chemical inertness and wear resistance, as well as high thermal conductivity. Thanks to its low absorption coefficient, high laser damage threshold and high thermal conductivity, the diamond’s thermal lens effect as the laser output window is 200 times lower than that of the ZnSe window. The low atomic number makes the diamond nearly transparent to X-ray. So, diamond is an ideal infrared optical window material.
Property |
ENTASK Diamonds |
Band Gap/eV |
5.47 |
Cutoff Wavelength/µm |
0.225 |
Absorption Coefficient |
0.1~0.3 |
Absorption Coefficient (10.6µm) |
0.1~0.6 |
Microhardness/(kg/mm²) |
~1000 |
Refractive Index |
2.417 |
dn/dT(10-3/K) |
1 |
Thermal Conductivity/[W/(cm.K)] |
20 |
Coefficient of Thermal Expansion/10-6K-1 |
2.3 |
Properties for Cutting Tools
Post-treated surface roughness (RA) is less than 5 nanometers.
A CVD diamond cutting tool shares a similar performance with that of natural diamond. It can realize ultra-thin cutting, and process extremely high workpiece accuracy and ultra-low surface roughness. Such a cutting tool is recognized as an ideal and irreplaceable ultra-precision machining tool. Different crystal facets have varied values of hardness, so the diamond products can be precisely oriented. The precise crystallographic orientation of ENTASK diamonds can be achieved.
A CVD diamond cutting tool shares a similar performance with that of natural diamond. It can realize ultra-thin cutting, and process extremely high workpiece accuracy and ultra-low surface roughness. Such a cutting tool is recognized as an ideal and irreplaceable ultra-precision machining tool. Different crystal facets have varied values of hardness, so the diamond products can be precisely oriented. The precise crystallographic orientation of ENTASK diamonds can be achieved.
Properties |
ENTASK Diamonds |
Hardness (KG/mm²) |
~10000 |
Density (g/cm³) |
3.52 |
Young's Modulus (GPa) |
>1050 |
Fracture Energy (J/M) |
10 |
Fracture Toughnes (Mpa • m½) |
3.8 |
Thermal Conductivity (W/cm • k) |
20 |
Wear Ratio |
>0.4 Million |
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