Alumina ceramic is a ceramic material based on aluminum oxide (Al2O3), which is mostly used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic cleaning is required.
Alumina ceramics are resistant to high temperatures - they have high alumina content, relatively dense structure, and special properties, so they are called special ceramics.
Alumina ceramics are high-temperature resistant and have a close-packed hexagonal structure composed of oxygen ions, while aluminum ions fill two-thirds of the octahedral gaps, which is the same as natural corundum. Stable α-Al2O3 structure, because alumina ceramics have high melting point, high hardness, wide range of uses, and excellent wear resistance.
The hardness of the ceramic patch is ≥HRA85, second only to the hardness of diamond, and the surface is smooth and the friction coefficient is small, and the wear resistance is very ideal, especially in high-temperature oxidizing media or corrosive media Among them, the material of alumina ceramic high temperature resistant sheet has much superior performance than other metal materials.
High-purity alumina ceramics are ceramic materials with an Al2O3 content of more than 99.9%. Since their sintering temperature is as high as 1650-1990℃ and the transmission wavelength is 1-6μm, they are generally Molten glass is made to replace platinum crucibles.
Using its light transmittance and resistance to alkali metal corrosion as sodium lamp tubes; Can be used as integrated circuit substrate and high-frequency insulating material in the electronics industry.
