Aluminum based silicon carbide structural components

Brief introduction
Aluminum based silicon carbide (AlSiC) structural components are a metal based composite material composed of aluminum alloy as the matrix and silicon carbide particles as the reinforcing phase. It combines the advantages of lightweight and high thermal conductivity of aluminum alloy with the high strength and low thermal expansion coefficient of silicon carbide, while effectively avoiding the performance disadvantages of a single material. This material has the following main characteristics:
-High thermal conductivity: The thermal conductivity can reach 180-240 W/mK, which is 10 times that of traditional Kovar alloys.
-Low thermal expansion coefficient: It can be matched with materials such as semiconductor chips by adjusting the content of silicon carbide, with a thermal expansion coefficient between 6.5~9.5 × 10 ⁻⁶/K.
-High specific stiffness and strength: The specific stiffness is 3 times that of aluminum and 25 times that of copper, and the density is comparable to aluminum.
-High wear resistance: Hardness HV ≥ 2500, capable of stable operation in high temperature and highly corrosive environments.
-Good dimensional stability: not easily deformed due to uneven stress distribution after processing.

Application Fields
Aluminum based silicon carbide structural components have been widely used in multiple fields due to their excellent performance:

1. Aerospace field:
   -Used for manufacturing aircraft fuselage, engine components, satellite structural components, etc., it can replace traditional nickel based alloy materials, reduce weight, and improve working temperature and efficiency.
   -In the optical mechanical structure of high-resolution remote sensing satellites, it can be used to make space optical reflector blanks, simplify the structure, and reduce weight.
   -As the main load-bearing structural component applied to hydraulic brake cylinder bodies, fan outlet guide vanes and other components of aircraft.
2. In the automotive field:
   -Used for engine components, transmission components, brake system components, etc., to improve the durability and fuel efficiency of components.
   -As a lightweight body material, it enhances the power and fuel economy of automobiles.
   -Silicon carbide particle reinforced aluminum based brake discs used in the manufacturing of electric vehicles can reduce weight by 50% compared to cast iron brake discs and improve driving range.
3. In the field of electronics:
   -As a heat dissipation substrate for IGBT modules, it is widely used in high-speed rail, subway, new energy vehicles, wind power generation and other fields.
   -Used for electronic packaging, high-frequency signal transmission lines, etc., to improve heat dissipation and circuit stability.
   -As a packaging material for microwave integrated circuits, it enhances signal stability and transmission efficiency.
4. Other fields:
   -Used for manufacturing heat-resistant structural components, wear-resistant structural components, precision instruments and equipment, etc.
   -Replacing tungsten copper material in radar chip substrates results in excellent heat dissipation and lighter weight.

Customization Details
Aluminum based silicon carbide structural components can be customized according to specific customer needs. Here are some key points in the customization process:

1. Material composition adjustment:
   -The content of silicon carbide can be adjusted between 15% and 65% to meet different performance requirements.
   -Ceramic fiber, carbon fiber and other reinforcing materials can be added according to the needs to further improve the bending strength.
2. Selection of molding process:
   -Common molding processes include casting, CNC machining, hot extrusion+CNC, etc.
   -Precision casting can be used to achieve net or near net forming of complex structural components.
3. Dimensional accuracy and surface treatment:
   -The dimensional accuracy can reach ± 0.003mm.
   -The surface can be treated with mirror finish or plated with nickel, gold, silver, etc.
4. Processing requirements:
   -Due to the high hardness of the material and the difficulty of processing, it is usually necessary to use CNC machine tools for machining.
   -Special attention should be paid to process parameters and equipment selection during the machining process to ensure machining accuracy and quality.

Aluminum based silicon carbide structural components have become one of the core materials in the high-end manufacturing field due to their excellent performance and wide applicability. With the continuous advancement of technology, its application prospects will become even broader.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.