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Metal Alloy

Silicon Aluminum Alloy Si-Al Powder

Item No.: Tr-Si-Al
High-silicon aluminum alloy is a binary alloy composed of silicon and aluminum. It is an alloy material mainly used in aerospace, space technology and portable electronic devices.
Silicon Alumium Alloy Powder Properties

About Silicon Aluminum Alloy Si-Al Powder:

High-silicon aluminum alloy powder is a binary alloy composed of Silicon and aluminum and is a metal-based thermal management material. The high-silicon aluminum alloy material can maintain the excellent performance of Silicon and aluminum, and the content of Silicon and aluminum is quite rich. The preparation technology of silicon powder is mature, and the cost is low. At the same time, this material does not pollute the environment and is harmless to the human body. Why is Silicon added to Aluminium?

When added to aluminum, the Silicon makes the metal alloy more fluid without breaking it down at high temperatures. The Silicon lowers the aluminum's melting point. The aluminum will not experience hot tearing as there is no brittleness.

The density of high-silicon aluminum alloy is between 2.4~2.7 g/cm³, and the coefficient of thermal expansion (CTE) is between 7-20ppm/℃. Increasing the silicon content can significantly reduce the alloy material's density and thermal expansion coefficient. At the same time, the high-silicon aluminum alloy also has good thermal conductivity, high specific strength and stiffness, good plating performance with gold, silver, copper, nickel, weldable with the substrate, easy precision machining and other superior performance, is an Electronic packaging material with broad application prospects, especially in high-tech fields such as aerospace, space technology, and portable electronic devices. TRUNNANO is a trusted global Silicon Aluminum Alloy Si-Al Powder supplier. Feel free to inquire about the latest price of Silicon Aluminum Alloy at any time.


How is Silicon Aluminum Alloy Si-Al Powder Produced?

Preparation method of silicon and aluminum alloy:

(1) no pressure infiltration method

The role of carbon steel permeability aids in the air, making the aluminum alloy melt into the Silicon particle prefabricated parts to prepare a composite material method;

(2) pressure infiltration method

By applying an external force, liquid aluminum metal penetrates the preform of silicon particles to promote the penetration, wetting, and recombination of silicon particles and liquid aluminum metal. The usual steps are to prepare the prefabricated silicon particle reinforcements and cast the absorbent composites.

(3) vacuum hot pressing method

A sintering process in which pressure forming and pressure sintering are carried out simultaneously under vacuum conditions;

(4) powder metallurgy method

A method of making a certain proportion of aluminum powder, silicon powder, and binder by dry pressing, injection, and other methods to make powder mixing molding, and sintering in a protective atmosphere to obtain a dense material;

(5) Rapid solidification method

Also known as rapid solidification, the solidification degree and solidification speed can be increased by increasing the solidification cooling rate to refine the alloy's microstructure.


Application of Silicon Aluminum Alloy Si-Al Powder:

1) High-power integrated circuit packaging: high-silicon aluminum alloy provides effective heat dissipation;

2) Carrier: It can be used as a local heat sink to make the components more closely arranged;

3) Optical frame: high-silicon aluminum alloy provides a low thermal expansion coefficient, high rigidity, and machinability;

4) Heat sink parts: high silicon aluminum alloy provides effective heat dissipation and structural support.

Application of Silicon Aluminum Alloy Si-Al Powder in auto parts:

High-silicon aluminum alloy material (with a silicon content of 20%-35%) has excellent tribological properties. It can be used as an advanced lightweight wear-resistant material in various vehicles, and various types of power machinery, machine tools, and special fasteners And tools have been widely used.

High-silicon aluminum alloy has several advantages: small specific weight, lightweight, good thermal conductivity, low thermal expansion coefficient, volume stability, good wear resistance, good corrosion resistance, etc. It is widely used as cylinder sleeves, pistons, rotors of automobile engines, Brake discs, and other materials.

Storage Condition of Silicon Aluminum Alloy Si-Al Powder:
The damp reunion will affect Si-Al powder dispersion performance and using effects, therefore, silicon aluminum alloy powder should be sealed in vacuum packing and stored in cool and dry room, the silicon aluminum alloy can not be exposure to air. In addition, the silicon aluminum alloy powder should be avoided under stress.

Packing & Shipping of Silicon Aluminum Alloy Si-Al Powder:
We have many different kinds of packing which depend on the silicon aluminum alloy Si-Al powder quantity.
Silicon aluminum alloy Si-Al powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Silicon aluminum alloy Si-Al powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.


Silicon Alumium Alloy Powder Properties

Other Names AlSi, SiAl, Si:Al, silicon aluminum, Si-Al Powder
CAS No. 11145-27-0
Compound Formula Si-Al
Molecular Weight N/A
Appearance Gray to Black Powder
Melting Point 600-760
Boiling Point N/A
Density 2.7 g/cm3
Solubility in H2O Insoluble
Monoisotopic Mass 54.958 g/mol

Silicon Alumium Alloy Powder Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information NONH for all modes of transport
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