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What is the thermal conductivity of alumina ceramics, the higher the better, how to test?
Alumina ceramics is a ceramic material with alumina (Al2O3) as the main body, which is used in thick film integrated circuits. Alumina ceramics have good conductivity,
Alumina ceramics is a ceramic material with alumina (Al2O3) as the main body, which is 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 widely used ceramics. Because of their excellent properties, they are more and more widely used in modern society and meet the needs of daily use and special properties.
Because the alumina ceramic tube has many characteristics that other conduits do not have, many people prefer to choose it, which is one of the reasons for its rapid development in recent years.
What is the thermal conductivity of alumina ceramics? How to test?
Thermal conductivity of alumina ceramics: material—thermal conductivity (W/m?k) Alumina ceramics—29.3 Beryllium oxide ceramics—196.8; probably thermal conductivity can reach 30W/M*K, boron nitride, aluminum nitride prices are relatively high , 200 yuan/KG, thermal conductivity can reach 100-200W/M*K. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. Its thermal conductivity varies greatly with temperature. The thermal conductivity test requires the selection of the laser flash method.
The next thing we want to talk about is the alumina ceramic itself. In fact, this material is not entirely made of alumina, but only the components of alumina are added during the construction. The addition of alumina greatly increases its thermal conductivity. This is a creative attempt, and it also greatly increases the possibility of ceramic materials. Another point is that other substances are actually added to the catheter. For example, copper is a metal element, which also increases the possibility of ceramic materials. sex. It may be that you still don’t have a specific understanding of the thermal conductivity of this material, but don’t worry, we can look at this problem in the same way. In fact, the thermal conductivity of alumina ceramics has reached 29.3 orders of magnitude, if you If you still can’t understand, we can refer to some plastic related parameters. The general plastic thermal conductivity is only a few tenths of magnitude, and the ceramic material is several hundred times that of him. It can be seen that the thermal conductivity of our emerging ceramic material is still very good. .
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2022-04-08
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