Aluminum-Silicon (AlSi) Alloy Powder, Al85Si15
APS: 50–100 nm, Purity: 99.9%
Performance Characteristics
Nano Al-Si alloy powder is produced using a gas-phase CVD method. The alloy ratio can be adjusted as needed, and the material features high purity, small and uniformly distributed particle size, large surface area, low loose density, and excellent dispersibility. It is lightweight, not prone to cracking, and suitable for large-scale industrial production. The alloy offers good thermal conductivity, low thermal expansion, strong wear resistance, stable volume properties, and reliable mechanical performance at both room and elevated temperatures. It disperses well in alloy and ceramic materials due to its small specific gravity and light weight.
Product Parameters
| Parameter | Value |
|---|---|
| APS (nm) | 50–100 |
| Purity (%) | 99.9 |
| BET Surface Area (m2/g) | 29.64 |
| Theoretical Density (g/cm3) | 2.684 |
| Bulk Density (g/cm3) | 0.896 |
| Melting Point (°C) | 400 |
| Boiling Point (°C) | 1100 |
| Shape | Spherical |
| Color | Black |
| Manufacturing Method | CVD |
| Al Content (%) | 85–90 |
| Si Content (%) | 10–15 |
Applications
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Nano aluminum-silicon alloy powder is used for sintering Al-Si alloys to produce low- and medium-strength castings with complex geometries, such as cover plates, motor housings, and brackets. It can also serve as brazing solder.
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When the silicon content is low, Al-Si alloys exhibit better ductility and are commonly used as wrought alloys. With higher silicon content, the alloy melt shows improved filling properties, making it suitable for cast alloys. In Al-Si alloys exceeding the eutectic point, where silicon content reaches 14.5%–25%, adding Ni, Cu, Mg, and other elements enhances overall mechanical properties. These alloys can be used to replace cast iron engine cylinders, significantly reducing vehicle weight. Cylinders made from Al-Si alloys can undergo electrochemical treatment to remove surface aluminum and expose primary silicon particles, greatly improving scratch and wear resistance. Alloys with 11%–13% silicon have become common piston materials due to their light weight, low expansion coefficient, and high corrosion resistance.
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Used as an antioxidant for refractory materials.
Packaging and Storage
This product is packaged in an inert-gas-filled glass bottle and should be stored sealed in a dry, cool environment. It must not be exposed to air to prevent oxidation and moisture-induced agglomeration, which can affect dispersion and performance. Packaging quantities can be customized according to customer requirements.
