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Showing posts with the label Ceramic Crucibles

Advantages of Boron Nitride Crucibles in High-Temperature and High-Purity Applications

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Hexagonal boron nitride is an excellent self-lubricating ceramic capable of withstanding extremely high temperatures while maintaining its lubricating properties, even in high-vacuum environments. Boron nitride (BN) crucibles are typically manufactured from hot-pressed boron nitride blanks, ensuring high density and structural integrity. Mechanically, hexagonal boron nitride behaves similarly to graphite, but it offers the additional advantage of outstanding electrical insulation.   Compared with graphite crucibles, BN crucibles exhibit significantly lower risk of carbon contamination and demonstrate greater chemical inertness in many high-temperature processes. In comparison with alumina crucibles, BN crucibles show lower wettability to molten metals, making them especially suitable for applications that demand high purity and minimal interaction between the melt and the container. While different crucible materials are optimized for different process conditions, the appropriate s...

Application of Thermal Analysis Crucible

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Source: https://www.innovacera.com/news/thermal-analysis-crucible.html Alumina ceramic crucibles are used in scientific experiments and materials such as molten metals. Made of 95 alumina ceramics, it has high temperature and corrosion resistance and lasts longer than other materials. Under normal circumstances, first put the object to be analyzed into the crucible or crucible, and then heat it. The heating speed and the temperature drop depend on the characteristics of the equipment and products, whether it is fast or slow, because the thermal expansion of the raw materials can cause cracks that are easy to produce, or make them grow quickly. The best way is to heat them slowly, which can extend their service life.

Silence friend of laboratory - Crucible

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Source: https://www.innovacera.com/news/silence-friend-of-laboratory.html Our customers come from all walks of life, and a large part of them come from laboratories in universities or research centres. For these researchers, our most suitable and standard product is ceramic crucible. This word may be new to the general public. Still, crucibles are good friends of the lab and a loyal helper of researchers to do experiments. Clays originally made crucibles, and one of the earliest uses of platinum was also making crucibles. However, with the development of preparation technology, crucibles can now be composed of any material that can melt or change its contents. Image by Skieze from Pixabay What is a crucible? Crucibles are vessels made of extremely refractory materials such as clay, graphite, porcelain... Its role is to melt and refine metallic liquids, and also as a solid-liquid heating and reaction vessel. Crucibles belong to chemical instruments. When we heat solid by fire, we must ...