Aluminum silicon carbide is also known as "aluminum-based silicon carbide", it is a kind of silicon carbide ceramic particle reinforced metal-based composite material. It uses aluminum as the matrix and is prepared in a special way such as a certain proportion, shape, and distribution state. It uses silicon carbide particles as a reinforcement to form a multi-phase composite material with obvious interfaces. It has unique advantages that a single metal cannot have. performance.
Aluminum-based silicon nitride composite materials are still in the early stages of the industry, but their application fields are very broad, which is also an important factor that has attracted more and more attention. At present, it is mainly used in: microwave integrated circuits, aerospace, power modules, etc.

Characteristics and processing methods of aluminum-based silicon carbide

1. High thermal conductivity, adjustable thermal expansion coefficient, its thermal conductivity can reach (180～240W/mK), and the adjustable range of thermal expansion coefficient can reach 6.5-9.5*10-6/K, so it makes the semiconductor chip and ceramic base A very excellent match can be achieved between the pieces, and an effective way is the failure phenomenon caused by material fatigue. In addition, it can also directly mount power chips on aluminum-based silicon carbide substrates.
2. It has a smaller density. The density of aluminum-based silicon carbide is basically the same as that of metal aluminum, which is much lighter than materials such as Kovar and copper, so it is particularly suitable for use in areas that are particularly sensitive to weight such as aerospace.
Processing methods of aluminum-based silicon carbide:
Although the hardness of aluminum-based silicon carbide is not low, it is not as difficult to process as silicon carbide. According to the content of silicon carbide, laser, diamond grinding rod, PCD cutter, sparking and other processes can be used for precision processing.

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