Ceramic substrates are typically composed of aluminum oxide, aluminum nitride, or silicon carbide. The following provides a detailed description of the materials used in these ceramic substrates:
Primary Materials: The primary materials for ceramic substrates include aluminum oxide and aluminum nitride, both of which are widely utilized in this application. Additionally, some ceramic substrates are fabricated using silicon carbide; however, these tend to be relatively more expensive.
Fabrication Process: Ceramic substrates are produced by bonding copper foil onto the surface of an aluminum oxide base through a specialized fabrication process. This synthesis technique endows the ceramic substrates with exceptional electrical insulation, thermal conductivity, and adhesion strength.
Material Properties: As one of the primary constituent materials, aluminum oxide is characterized by its high purity, high density, and excellent electrical insulation and thermal conductivity. These attributes render ceramic substrates indispensable in electronic circuit packaging technologies, where they demonstrate outstanding performance-particularly in the fabrication of high-power semiconductor modules. Aluminum nitride and silicon carbide also possess similarly excellent properties, though they may differ in specific aspects; for instance, silicon carbide exhibits superior hardness and wear resistance.