3U Super Hard Products Co., LtD.

CVD Diamond

Chemical Vapor Deposition (CVD) diamond has the excellent chemical and physical natural characteristic and high pressure, temperature (HPHT) synthetic diamond. It is? manufactured by means of a diamond synthesis technology in which a low pressure reactor is used to combine a thermal or plasma activating agent with a gas-phase carbon to produce a chemical reaction which lead to polycrystalline diamond crystal growth or deposition upon a solid surface or substrate.
Although not a new concept (CVD diamond synthesis was first introduced by scientists over 50 years ago) it is only within the last decade that CVD diamond synthesis has shown its potential that it has outstanding thermal conductivity and excellent abrasion resistance.CVD diamond wafers can also be cut into a variety of shapes and polished to achieve mirror-like finishes if required. Depending on the synthesis process used, CVD diamond can be engineered to give a range of diamond materials which enable new technologies and new opportunities for research and industry.

CVD Diamond Grades & Applications

Optical Grade CVD Diamond 每 High purity & transparency (transmission 71.4% @ 8-10米m).

IR (Infra-red) Windows

Thermal Grade CVD Diamond 每 High hardness & thermal conductivity (>12W/cmK).

Heat Spreader
IC (Integrated Circuit)
LD (Laser Diode)
LDA (Laser Diode Array) for thermal management

Mechanical Grade CVD Diamond 每 High hardness, good tensile strength & fracture toughness.

Dressing Tools 每 Single & multipoint dressers; grinding wheel dressers.
Cutting Tools - Surgical knives; cutting tool inserts; drill bits; reamers etc.
Wear Resistant Coatings 每 Non-ferrous, plastic and composite materials.
Wire Dies 每 Wire die blanks for hard metal wire e.g. tungsten, molybdenum & stainless steel.

PRODUCT	DIMENSIONS	APPLICATION
CVD Diamond Wafers	Diameter: up to 120mm Thickness: 0.3 每 2mm Available polish: Single Side or Double Side
CVD Diamond Heat Spreaders	Size: 10 x 10mm Thickness: 0.2 每 0.8mm Available polish: Single Side or Double Side	Cooling of High-Power Electronic Devices e.g. Laser Diodes.
CVD Diamond Bars	Thickness x Width x Length 0.6mm x 0.6mm x 3-8mm 0.8mm x 0.8mm x 3-8mm 1mm x 1mm x 3-8mm 1.5mm x 2mm x 3-8mm 2mm x 2mm x 3-8mm	Dressing Tools
CVD Diamond Cubes	Thickness x Width x Length 0.8mm x 0.8mm x 0.8mm	Dressing Tools
CVD Diamond Die Blanks	Shape: Hexagon Inner Diameter x Thickness (mm) ADDMA Std. D6 2.5 x 1.0 ADDMA Std. D12 3.2 x 1.5	Wire Drawing
CVD Diamond Composite w/Tungsten Carbide Substrate	Shape: Triangle Overall Thickness: ~1.6mm CVD Diamond Layer Thickness: 0.5 每 0.6mm Angle x Side Length 90 x 4.5mm 80 x 4.5mm 70 x 4.5mm 35 x 4.5mm	Machining Non-ferrous Metals, Plastics and Composite Materials