XING TAL LONG
99.99 aln ceramic aluminum nitride cup crucible
Aluminum nitride, whose chemical formula is ALN, is an important structural ceramic material. It is a superhard substance that resists wear and tear and resists oxidation at high temperatures. The hardness of aluminum nitride ceramics is second only to diamond, boron carbide and cubic boron nitride, and aluminum nitride ceramics rank fourth in inorganic materials. At present, aluminum nitride with high density can be prepared by hot pressing sintering method. It has high strength and good oxidation resistance. It can maintain no deformation under high temperature conditions.Contact us
Aluminum nitride (AlN)
Aluminum nitride (AlN) ceramic material was found to be promising in microelectronics applications, due to its very high thermal conductivity and property as an insulating ceramic. Recently, the most common application for aluminum nitride is substrate for electronics or chip carriers. Along with PBN crucibles, AlN is also one of the selected materials to build crucibles for grow crystals of GaN (gallium nitride)
Aluminum nitride crucibles could withstand about 1300°C in air, without bulk oxidation, although the process started after 700°C. In vacuum, AlN decompose at 1800°C. AlN melts at 2200°C, with inert atmosphere protection. In general, the working temperature for AlN products is 800°C in air, 1700°C in vacuum and 2100°C in inert atmosphere.
Material data sheet
|Item||Unit||Aluminium Nitride ceramic/AlN|
|Linear expansion coefficient||RT-400℃,10-6||4.4|
|Thermal conductivity||20 ℃,W/m.k||≥170|
|Bulk resistance||Ω.cm||≥10 14|
|Dissipation factor||1 MHz||3 x 10-4|
|Dielectric constant||1 MHz||9.0|
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* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.