Boron Nitride Crucible

Ceramic crucibles made of hexagonal boron nitride play an important role in industrial production. In series manufacturing and high temperature melting processes (such as those used in the production of metallic materials) are expected to be more effective than they have traditionally been. These are the most important characteristics of the perfect production plant: higher performance, greater variety in processing, and chemical and thermal resistance of the production systems. Due to particular significance, it is important to consistently avoid metallic materials' melts from adhering to the mold wall, and to preventing melt-spreading devices from melting. Hot metal like aluminium can adhere, strike mold walls, and even react, all of which can result in failure, this is why Hexagonal Boron Nitride Crucible is the one of the only innovative materials that fulfill these demands.

Material of BN crucible is like the traditional graphite, which has a hexagonal structure lattice, in addition to the desired lubrication andeparation effect. However, while graphite is unaffected at temperature as high as 1,000 degree C/1,832 degree F, boron nitride frictions activity holds steady at this temp. condition when used in metal melting and casting. Since it functions well at high temperature, it is suitable as a high-temperature stable crucible, for example, crucible liner for e-beam evaporation. Boron nitride would not be affected by these conditions because it does not interfere with graphite. Due to excellent separation properties, particularly compared to aluminium melts, they are characterized as innovative. Ensuring the molten metal does not adhere to the walls of molds and encouraging the slipping of the molten metal on the lining of the mold helps to keep the walls of the mold free of the molten metal. The material in particular prevents the mold walls from deterioration, increasing the entire products' service life.

Favorable Features

Material Properties

∆ The above data is offered for reference and comparison only, exact data will vary depending on manufacturing method and part configuration.

More Information

After the boron nitride ceramic crucible has been used for a long time, the molten material can infiltrate its surface, and it is difficult to clean it with general methods. As a result, a crucible replacement is required for each molten material that needs to maintain high purity. Ceramic crucibles made of boron nitride have always been expensive. Use a mixture of concentrated sulfuric acid, concentrated nitric acid and hydrofluoric acid with a volume ratio of 1:1:1 and a 60% caustic soda (NaOH) solution to corrode and peel off the surface of the BN ceramic crucible, this way can clean the BN(Boron Nitride) crucible without leaving impurities, so that it can be used multiple times to melt different materials and reduce costs.

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