Aluminum nitride ceramic material is a refractory, composite ceramic material that has a hexagonal wurtzite. Pure aluminum Nitride is blue-white. Aluminum nitride ceramics, on the other hand, are typically gray or white.
Aluminum nitride AlN melts at 2800°C and is stable at higher temperatures in an inert environment. It has excellent thermal conductivity and electrical insulation properties. Additionally, it has low dielectric constant and loss. This combination makes it an important advanced material for many applications, including optics and lighting, electronics, renewable energy, and electronic devices.
Aluminum nitride structure
Aluminum nitride AlN is a covalent bonding substance with a hexagonal crystal structure. The most common methods of preparing aluminum Nitride include direct nitridation (carbothermal reduction), high-energy ball milling and high-temperature self propagating synthesis. Chemical vapor deposition is another popular method.
The preparation method for aluminum nitride clays
The process of making aluminum nitride clays is very similar to other ceramic materials. There are three main preparation methods: powder synthesis; molding; and sintering.
As the raw material, aluminum nitride is used to make the final ceramic product. Its purity, size, particles, oxygen content, and other impurities have a significant impact on the thermal conductivity, subsequent drying, and the forming of the final product. It is the outstanding performance of the final product. cornerstone. There are several ways to make aluminum nitride, including direct nitridation or carbothermic reduction, self propagating high-temperature synthesizing, chemical vapor deposition, and self-propagating.
Molding process for aluminum nitride dust
There are many ways to mold aluminum nitride powder. These include traditional molding processes like molding, hot pressing and isostatic press. All of them are possible. All are applicable due to the high hydrophilicity aluminum nitride granules. To reduce the risk of aluminum oxide oxidation, avoid contact with water while molding. Although hot pressing and isostatic presses are capable of preparing high-performance bulk aluminium nitride materials, their high production costs and inefficientness cannot be met by the rising demand for aluminum substrates for electronics. This problem was solved by adopting the casting method to make aluminum nitride clay substrates. The aluminum nitride clays used in electronics manufacturing are also made using the tape casting process.
Application of Aluminum Nitride Ceramics
Aluminum nitride ceramics are also used extensively as a substrate material and as an electronic films material. Aluminum nitride can also be used as a container to vacuum evaporation or the smelting metals.
Its numerous excellent properties make aluminum nitride a versatile material. It is a piezoelectric film and has been widely used. As the market develops, the applications of aluminum nitride-ceramic materials will expand. This is becoming more common.
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