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Boron Nitride, often referred to as “white graphite”, is a non-abrasive, white powder with a hexagonal plate crystal structure similar to that of graphite, but with a much higher oxidation resistance at 800ºC.
Boron Nitride ceramic components are made by a hot press sintering process from densification of powder to a solid blank. The manufacturing process means that Boron Nitride is a ceramic material with excellent machinability, that can be used to make customised and highly complex parts with very strict tolerances. The material then differs from other ceramic material bodies in that after pressing and machining, the component is ready for use without the need of any additional heat treatment or firing, maintaining the complex shapes and tight tolerances achieved during the manufacturing and machining processes.
Boron Nitride ceramics can be produced and manufactured in a variety of different grades and material blends. This includes high purity 99% and 99.7% Boron Nitride grades, and also several different material blends of Boron Nitride alloyed with varying mixes of Alumina, Aluminium Nitride, Silicon Carbide, Silicon Nitride, or Zirconia. These different grades or blends provide Boron Nitride with a unique mix of material properties combining excellent thermal shock resistance, high thermal conductivity, low thermal expansion, exceptional heat resistance, good chemical inertness, high volume resistivity, a low dielectric constant, and high electrical resistance.
This unique combination of chemical, electrical, mechanical and thermal properties means that Boron Nitride ceramic components have found extensive use across a wide variety of high-performance applications and industries. This includes many products used within the semiconductor industry, within PVD and plasma systems, crucibles and nozzles for metal melting and atomisation, vacuum melting and vapor deposition, insulators for high temperature electrical furnaces, induction heating, and many other applications where high-performance ceramics are required. Due to the exceptional heat resistance and thermal shock resistance, there is also significant use within extreme temperature environments or where extreme thermal shock is present.
Anderman Industrial Ceramics can reliably supply many custom size or complex shapes in different Boron Nitride grades or material blends, utilising our knowledge and expertise to provide confidence that the product and material supplied will exceed performance expectations.
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