CVD polycrystalline diamond

CVD diamonds are diamonds synthesized using chemical vapor deposition (CVD), and the manufacturing methods are broadly categorized into hot filament (thermally excited) and plasma (discharge-excited) processes.

Since it is a 100% carbon diamond produced without binders, it possesses the inherent properties of diamond, such as high hardness, corrosion resistance, wear resistance, electrical insulation, and high thermal conductivity. Furthermore, because it is polycrystalline, there is no need to consider crystal orientation during use.
It can be used for dressers, wire drawing dies, cutting tools, heat dissipation materials (heat sinks), optical lenses, and laser windows.

CVD polycrystalline diamond
Regarding Size and Polishing Conditions
Standard sizes

polycrystal CVD diamond

Polycrystalline CVD diamond “CDK” “CDY”

The CVD diamonds synthesized by Famous using the direct current plasma method are high-quality, consistent products, thanks to an integrated production system that covers everything from synthesis to polishing, cutting, and cleaning.

Based on differences in synthesis growth rates, we offer two grades in our lineup: the standard-grade ‘CDK’ and the premium-grade ‘CDY’.

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Polycrystalline CVD diamond “CDK” “CDY” Lineup

	CDY	CDK
Manufacturing Process	DC plasma	DC plasma
Maximum dimensions [(L)mm×(D)mm×(t)mm]	10.0×10.0×1.0(t)	10.0×10.0×1.0(t)
Density [×10³kg/m³]	3.51	3.51
Thermal conductivity [W/m・K]	1,500~2,000	800~1,300
Coefficient of thermal expansion [10^-6/K]	~1.0±0.1ppm/k(300k) ~4.4±0.1ppm/k(1000k)	~1.0±0.1ppm/k(300k) ~4.4±0.1ppm/k(1000k)
Electrical Characteristics	Insulation	Insulation

Regarding Size and Polishing Conditions

We offer these products in a variety of shapes—including strips, plates, and discs—to suit your specific needs. Please feel free to contact us regarding your desired size and surface polishing specifications.

CVD growth surface

Example of product packaging (strip-shaped, 100 pieces)

Standard sizes

Dimension (mm)				Length (mm)
0.3	×	0.3	×	2.0
0.3	×	0.3	×	3.0
0.3	×	0.3	×	4.0
0.3	×	0.3	×	5.0
0.4	×	0.4	×	2.0
0.4	×	0.4	×	3.0
0.4	×	0.4	×	4.0
0.4	×	0.4	×	5.0
0.5	×	0.5	×	2.0
0.5	×	0.5	×	3.0
0.6	×	0.6	×	2.0
0.6	×	0.6	×	3.0
0.6	×	0.6	×	5.0
0.6	×	0.6	×	7.0
0.8	×	0.8	×	2.0
0.8	×	0.8	×	3.0
0.8	×	0.8	×	5.0
1	×	1	×	3.0
1	×	1	×	5.0
1.5	×	1.5	×	5.0

About Global Diamond

At Global Diamond, we aim to resolve and address any challenges or issues you may be facing with your current diamond and CBN abrasives from the following three perspectives. We go beyond simply offering catalog selections; through customization, we work closely with you to help you achieve a better final product.

Evaluation and Recommendations for Your Current Abrasive Grains
Compatible with special mesh sizes
Precision coarse-grain cutting

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We also offer contract analysis services

Drawing on the extensive data and proven track record that comes from being a specialized manufacturer that has conducted its own incoming inspections of abrasive grains, we offer contract analysis services for the samples you provide.

View details on contract analysis

Consultations and Inquiries

If you're having trouble selecting the right superabrasive product, please feel free to contact us. We'll help you find the superabrasive product that best suits your needs.

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