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CVD Blanks for Optical Windows
Our CVD Blanks for Optical Windows has excellent optical properties, mechanical properties and thermal properties; from X-rays, ultraviolet light, visible light, infrared light up to millimeter microwave band has a high transmittance, excellent mechanical properties and thermal properties, so that it can be used in harsh environments.
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PRODUCT LIST
- Single crystal superhard material
- Large Single Crystal Diamond Big Size Single Crystal Diamond BCD seriesSingle Crystal Diamond Plates SCDP series
- Single Crystal Diamond Coarse Synthetic Diamond CSD seriesFine Synthetic Diamond FSD seriesResin Bond Diamond AC series
- Crushed & Reshaped Diamond Powder Crushed Diamond Powder CCSD seriesReshaped Diamond Powder RCSD seriesPolycrystalline Diamond Abrasives APC4 series
- Diamond Micron Powder General Diamond Micron Powder CSDM seriesSpecial Diamond Micron Powder CSDM series As Grown Diamond Micron Powder ASM series Polycrystalline Diamond Micron Powder CSDM-PD series
- CBN (Cubic Boron Nitride) CBN MonocrystalCBN Micron Powder
- Coated Diamond and CBN Coated Diamond and CBN
- Polycrystalline Superhard Materials
- PCD (Polycrystalline Diamond) PCD Blanks for Wire Drawing DiesPCD Wire Drawing DiesPCD Blanks for Cutting ToolsPCD Cutting Tools
- PDC (Polycrystalline Diamond) PDC Cutters for Oil & GasPDC Cutters for MiningPDC Cutters for StoneThermally Stable PCD(TSP)
- PCBN (Polycrystalline Cubic Boron Nitride) Solid PCBN Cutting ToolsCarbide Supported PCBN CompactsPCBN Soldering Cutting Tools
- CVD Diamond CVD Blanks for Wire Drawing DiesCVD Blanks for DressingCVD Blanks for Cutting ToolsCVD Blanks for Thermal ManagementCVD Blanks for Optical Windows
Size Chart
|
Project |
Parameters |
|
Vickers hardness |
8000~10000 kg/mm² |
|
Density |
3.51g/cm³ |
|
Young's modulus |
1000~1100GPa |
|
Thermal expansion coefficient |
2.3x10-6 ℃-1 |
|
Cutting tolerances |
≤0.030mm |
Note: to provide Single or double-sided polishing, shape and size can be cut according to customer requirements.
Comparison
|
|
CVD |
ZnSe |
ZnS |
Ge |
Si |
GaAs |
Al2O3 |
|
Band gap/eV |
5.48 |
2.7 |
3.9 |
0.664 |
1.11 |
1.142 |
9.9 |
|
Absorption coefficient |
0.1~0.3 |
0.005 |
0.2 |
0.02 |
0.35 |
0.01 |
|
|
Micro hardness /(kg/mm2) |
8300 |
137 |
230 |
780 |
1150 |
721 |
190 |
|
Refractive index |
2.38 |
2.40 |
2.19 |
4.00 |
3.42 |
3.28 |
1.63 |
|
Thermal conductivity /(W/(cm.K)) |
18-22 |
0.19 |
0.27 |
0.59 |
1.63 |
0.55 |
0.35 |
|
Thermal expansion coefficient /10-6K-1 |
1.3 |
7.6 |
7.9 |
5.9 |
2.56 |
5.9 |
5.8 |
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Description
Introduction：
CVD (Chemical Vapor Deposition) diamond is a mixture of carbon-containing gas and hydrogen at high temperatures and sub-standard atmospheric pressure is excited to decompose to form an active diamond carbon atoms and deposited on the substrate intergrowth of polycrystalline diamond.Since CVD diamond does not contain any metal catalyst, so its thermal stability close to natural diamond.CVD diamond grains are disordered, non-brittle cleavage plane, thus showing isotropic.CVD diamond is widely used in mechanical, microelectronics, thermal, optical, aerospace, military, medical and other fields.our company mainly produces the following types of CVD diamond products: CVD diamond wire drawing die core, CVD diamond dresser blank, CVD diamond cutter blank, thermal grade CVD diamond sheet, optical grade CVD diamond sheet and other multi-grade CVD products.and can be cut according to user requirements, polishing and other processing.
Product introduction：
Our CVD Blanks for Optical Windows has excellent optical properties, mechanical properties and thermal properties; from X-rays, ultraviolet light, visible light, infrared light up to millimeter microwave band has a high transmittance, excellent mechanical properties and thermal properties, so that it can be used in harsh environments.