Nanodiamond powder

Nanodiamond powders produced by detonation or milling.

Detonation grades offer small particles at lower cost: gray powder with higher purity, or black powder with lower purity.

Milled gray powders offer narrow size distributions and high purity, with grades in the tens to hundreds of nanometers.

Detonation nanodiamond

Purity: 98–99%, gray powder

Average particle size: 4–6 nm

Source density value: 3.05–3.3 g/m³; unit requires confirmation.

Specific surface area: 282.83 m²/g

Initial oxidation temperature: 803 K

Electrical value listed in Ω·cm: 7.7 × 10⁷; 0.1–2 with boron doping. The source labels this “conductivity”; confirm the parameter designation.

Black detonation nanodiamondFor lubricant-development applications.

Purity: 55–75%

Graphite impurity: 30–40%, as listed in the source; confirm batch composition.

Average particle size: 4–15 nm

Specific surface area: 287.87 m²/g

High-purity non-detonation nanodiamond

Purity: >99.95%, grade A

Purity: >95%, grade B

Average particle sizes: 45, 80, 120, 150 or 180 nm