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What raw material is the first choice for preparing high purity alumina crucibles

15 December 2021
The optimal choice for the preparation of high purity alumina crucibles is alumina (AL2O3) with purity higher than 99%. The choice of raw materials will directly affect the production quality of alumina ceramic crucibles. So, what is high purity alumina? And why should it be the first choice for high purity alumina crucibles? Johncera Group will let you know the answer.

What is high purity alumina?


Alumina can be divided into high-purity type and ordinary type. The purity of high purity alumina AL2O3 is greater than 99%, and the sintering temperature is as high as 1650°C to 1990°C. Ordinary alumina AL2O3 purity is less than 99%, and sometimes AL2O3 purity of 80% or 75% is also classified as ordinary alumina series. 

High-purity alumina is the basic material for the production of heat-resistant, wear-resistant and corrosion-resistant products. High-purity 99% alumina is usually used to make high purity alumina crucibles, integrated circuit substrates, and special wear-resistant materials, etc., which cannot be achieved by ordinary alumina. Ordinary 95% alumina is mainly used as wear-resistant parts, and 85% alumina is often used to mix part of talc to improve electrical properties and mechanical strength. It can be sealed with metals such as molybdenum, niobium, and tantalum, and some are used as electric vacuum device.

Why is high purity alumina the first choice for preparing high purity crucibles?


This is because related industries and laboratory users have high requirements for the quality of crucibles. A high purity crucible with poor quality will not only affect the results of the experiment, but moreover, may directly lead to the failure of the experiment. The particle size of high purity alumina can be controlled according to the process, with uniform particle size distribution and stable chemical properties. Using it to prepare high purity alumina crucible products can make the produced alumina crucible have the advantages of good conductivity, high wear resistance, corrosion resistance, low thermal expansion coefficient, etc., and can meet the quality requirements of users. 

In this regard, Johncera Group uses 99.7% Japanese low-sodium alumina to produce high purity alumina crucibles. Johncera Group can customize high-purity crucibles of various shapes and sizes, making high purity alumina crucibles perfectly suitable for various applications. Including: powder heat treatment, heat treatment of lithium battery cathode materials, powder sintering of electronic products and phosphors, heat treatment of piezoelectric and dielectric electronic materials, and chemical analysis.

In general, high-purity alumina is widely used in the preparation of high-purity crucibles because of its superior performance. As a professional manufacturer of high purity alumina crucibles, Johncera Group strictly controls every level, and has been highly praised in terms of user experience and user satisfaction. 

Finally, I hope this article can help you and deepen your knowledge of the preferred raw materials for preparing high purity alumina crucibles. If you want to know more related knowledge, please visit our website for more information, we can provide you with high-quality alumina crucible products and professional knowledge solutions.

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