99.99% Silicon Carbide Powder 0.2μm 0.5μm 1μm
99.99% silicon carbide powder is a high-purity SiC powder prepared by aerosol ablation. Nanoscale silicon carbide features high specific surface area, high strength, high hardness, stable chemical properties, low coefficient of thermal expansion, and good thermal conductivity. It is widely used in nanomaterials, fine powders, special ceramics, and composite materials.
Characteristic：
- High purity of silicon carbide. The purity of SIC nanopowder is higher than 99%, and the content of 99% -99.99% silicon carbide （3N 4N SiC powder) are available.
- Nano silicon carbide powder has high fineness and can be produced from 30nm to 500nm. Grinding grade nano silicon carbide with narrow particle size distribution can also be customized.
- Both α-SiC and β-SiC powder can be customized and produced according to requirements.
- Nano silicon carbide powder has stable chemical properties and high resistance to high-temperature corrosion and acid alkali solvents.
- Nano-silicon carbide has high hardness and superior wear resistance.
- SiC nanopowder has a high bandgap width, as well as high critical breakdown electric field characteristics and high thermal conductivity.
Technical index of Nano SiC powder：
| crystal structure | Cubic | Hexagonal |
| Crystal phase | β | α |
| Melting point | 2700° | 2400° |
| Decomposition temperature | 2830°±40° | 2600° dissociate |
| Thermal expansion coefficient | 2.5-7 x10-6 /°C | 7-9 x10-6 /°C |
| Thermal conductivity | 0.255 W/cm K | 0.410 W/cm K |
| Mohs hardness | 9.5-9.75 | 9.4-9.5 |
| Vickers hardness (microhardness) | 3300-3500kg/mm2 | 3200-3400kg/mm2 |
| Band Gap | 2.2 eV | 2.86 eV |
| Relative permittivity | 9.72 ε | 9.66-10.03 ε |
| Electron mobility | ＞1000 | 460 |
ICP Index：
| Cu (ppm) | 7 |
| Fe (ppm) | 5 |
| Cr (ppm) | 1 |
| Ni(ppm) | 6 |
| Co(ppm) | 5 |
| Zn (ppm) | 3 |
| Al (ppm) | 2 |
| Mg (ppm) | 3 |
| Na (ppm) | 1 |
| W(ppm) | 1 |
| V (ppm) | 4 |
| F.C(ppm) | 50 |
| N (ppm) | 5 |
99.99% silicon carbide powder specification：
50nm,200nm,500nm,1um,etc。
Application:
- Advanced grinding and polishing powders, especially in the semiconductor field.
- Raw materials for precision grinding tools.
- Wear-resistant fillers for modified nylon materials, engineering plastics, rubber, etc.
- Special advanced functional ceramics and structural ceramics.
- Additives for wear-resistant coatings, powder coatings, and nano-coatings.
- Electrical material components.
- High-performance refractory materials.
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