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SCM Nano Diamond
About SCM Nano Diamonds
Dia Material develops diamond particles with an average particle size of less than 100 nm (0.1 µ) as ultrafine (nano) diamonds.
As a domestic manufacturer, we pursue a stable supply of nanodiamonds while actively conducting joint research with various industries to develop new applications.
| Types of nano-diamonds (ultrafine diamonds) handled (origin of production method) |
|
| Polycrystalline (impact compression) |
Monocrystalline (static pressure) |
Diamond Properties
Hardness, low friction, high thermal conductivity, low thermal expansion, wide gap, stability, surface properties, etc.
Application development
Ultra-precision polishing, solid-state sliding, plating, heat sinks, CVD seed crystals, electron emission, UV blocking, catalysis, adsorption, medical, etc.
Physical properties of nanodiamonds
Polycrystalline type
100nm, FE-SEM x100,000 times
100nm, TEM x80,000 times
Manufacture
Synthesised from graphite by impact energy produced in an explosion (impact compression method, 40 GPa, 3000 °C x instant)
Production
USA, Japan (our company), China, etc.
Production
Sintered primary particles (5-20 nm)
Secondary particles can be classified in 50 nm intervals
Secondary particles can be classified in 50 nm intervals
Crystallinity
Cubic & hexagonal
Shape
Rounded corners, irregularly shaped
Specific surface area
>120m2/g(100nm)
Other
No cleavage,
Residual impurities inside the sintered body (<1%)
Residual impurities inside the sintered body (<1%)
Monocrystalline type
100nm, FE-SEM x100,000 times
100nm, TEM x80,000 times
Manufacture
Synthesised from graphite using high-pressure, high-temperature equipment
(Static pressure method, 50,000 atmospheres, 1,200°C x approx. 10 min)
(Static pressure method, 50,000 atmospheres, 1,200°C x approx. 10 min)
Production
All over the world
Particle size
Exists as single particles
Crystallinity
Cubic
Shape
Angular, irregular, many types
Specific Surface Area
330-40m2/g (100nm)
Other
Cleavage, low impurity content