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Ceramic materials have a wide range of applications due to their unique properties, including high strength, durability, high temperature resistance, and corrosion resistance. One common use of ceramics is as a substrate, which is the base material to which other materials or components are attached. In this article, we will ** some ceramic substrate materials.
What is a ceramic substrate?
Ceramic substrates are advanced ceramic materials used to provide a stable foundation for components in automotive, electronics, and industrial applications. The substrate usually has a flat, rectangular shape with a smooth and uniform surface. It is made of ceramic materials such as alumina or silicon carbide and has good mechanical, thermal, and electrical properties.
The main features of ceramic substrates:
Impressive thermal performance: These materials have a low coefficient of thermal expansion and high thermal conductivity, which can improve the efficiency of components and reduce the potential for thermal damage. For example, the thermal conductivity of SiC is not lower than that of metal.
Significant electrical characteristics: With higher electrical conductivity, chips and other components based on ceramic substrates use less energy and can reduce signal delay time.
The main application of ceramic substrates
1.Automotive industry
You can find a wide range of ceramics used in the manufacture of electric power steering systems, integrated starter alternators, diesel and water pump controls, and vehicle motor and engine controls. These units not only reduce fuel consumption, but also reduce exhaust pollution.
2.Renewable energy sector
These substrates are used in the renewable energy industry to manufacture photovoltaic solar inverters and concentrating photovoltaic concentrators.
3.Other industries
Their industrial applications involve pump control, variable frequency drives, power supplies, and standardized semiconductor modules.
What ceramic materials can be used as substrates?
Alumina
Alumina is the most commonly used substrate material due to its high strength, good thermal conductivity, and electrical insulating properties. It also stands out for its chemical stability and abundance. Alumina is commonly used in electronic applications such as circuit boards, as well as in the production of catalytic converters, high-temperature furnaces, and biomedical implants.
Zirconia
Zirconia is a ceramic material that is known for being extremely strong and tough. This substrate is widely used in dental implants and hip replacements. You can also find it in the production of oxygen sensors and fuel cells.
Silicon carbide
Silicon carbide has excellent thermal conductivity, high temperature resistance and corrosion resistance. Its high temperature thermal conductivity is as high as 100W (m·k) -400W (m·k). For this reason, SiC is used in high-temperature equipment (e.g. furnace components) as well as in the production of semiconductor devices.
Silicon nitride
Si3N4 has a high thermal conductivity of 400 W (m·k), making it a commonly used substrate material in high-temperature applications such as gas turbine components, as well as in the production of bearings and cutting tools.
Article**] Zhanzhi Technology.
Keywords:Aluminum nitride ceramic substrate Alumina ceramic substrate Ceramic metallization Ceramic cooling sheet Ceramic heat dissipation substrate Aluminum nitride ceramic circuit board