Boron Nitride Crucible Providing Superior Heat Resistance for Industrial Applications
Boron Nitride Crucibles are ideal for applications requiring extreme temperature tolerance and chemical resistance, such as melting raw materials such as glass, ceramics and metals.
Boron nitride crucibles have the ability to resist oxidation at high temperatures unlike other crucibles, yet should still be stored away from humid environments and directly wiped with alcohol to reduce moisture absorption.
1. Extreme Heat Resistance
Hexagonal Boron Nitride (hBN) crucibles offer superior thermal and chemical inertness for use with melting or vaporizing materials inside, eliminating unwanted reactions with materials inside that might otherwise melt or vaporize inside. Their materials are capable of withstanding high temperatures without being affected by oxygen; making this material perfect for molten salts, rare earth metals, glass, fluorides, or any other materials which require an inert environment. Furthermore, its low coefficient of thermal expansion means lessened dimensional changes during temperature variations.
Comparative to traditional metal crucibles, hBN is less prone to contamination and easier to shape than its metal counterparts. Due to its strength, hBN can withstand high-temperature processes like ceramic melting, glass melting, and metal smelting without warping or cracking; additionally it is vacuum compatible and suitable for vacuum environments. Unfortunately however, as moisture can penetrate its pores, this material needs to be stored in dry environments without being washed as this increases moisture absorption levels significantly.
2. Chemical Inertness
Pyrolytic Boron Nitride (PBN) is a high-temperature material renowned for its chemical stability and electrical insulation properties, making it the ideal material to manufacture refractory components, microwave, semiconductor devices and industry standardized crucibles for Gallium Arsenide crystal production. PBN also boasts outstanding mechanical strength making it suitable for many industrial applications ranging from refractory components, microwave devices to industry standard crucibles used during Gallium Arsenide crystal growth processes.
High purity boron nitride crucibles created through hot pressing are available in an assortment of sizes and shapes to meet various applications’ thermal stability, chemical resistance and non-wetting properties needs for reactive metals or sticky substances, ensuring precise process control without contamination issues.
3. Minimal Adhesion
Hexagonal Boron Nitride (hBN) ceramic has a special composition which makes it highly durable material capable of withstanding extremely high temperatures, as well as being easily machined during hot pressing to enable precise molding into various shapes and sizes.
hBN does not react with liquid salts like traditional graphite crucibles do, thus ensuring a cleaner melting process while protecting sample purity and quality during analysis. This makes them the ideal way to protect both purity and quality during melting processes.
hBN is also less susceptible to thermal shock and features a low coefficient of expansion, making hBN crucibles an excellent choice for high temperature environments where traditional materials would degrade or warp due to rapid temperature fluctuations, providing consistent results and maximum sample accuracy in critical applications.
4. Thermal Shock Resistance
Boron nitride exhibits exceptional thermal shock resistance, and can withstand long-term use at temperatures as high as 1800 degC under vacuum or 2100 degC with gas protection (argon or nitrogen atmosphere being the optimal conditions). Furthermore, it can even be taken directly out of a 1000 degree Celsius furnace and cooled within minutes without cracking.
Boron Nitride crucibles can be filled with liquid metals, glass or other materials for high temperature applications requiring superior thermal stability and chemical inertness. They’re also highly machinable, bringing high performance solutions for critical metallurgical processes.
Boron nitride differs from refractory metals such as molybdenum, tungsten, and tantalum in that it does not react chemically with oxygen during melting processes, eliminating unwanted chemical reactions and increasing temperature tolerances than oxide ceramics while also requiring less air shielding in manufacturing, making it both cost-effective and energy-efficient.
5. Electrical Insulation
Boronitride stands out for its thermal stability, non-wettability and microwave transparency – while being highly insulating to help avoid unwanted electrochemical reactions during experiments that require precise temperature regulation such as crystal growth or materials synthesis.
Hexagonal boron nitride’s durability allows it to withstand interactions with molten metals, rare earth materials and glass as well as chemicals and vapors, while remaining relatively inert when in contact with slag, glass and ceramics. Furthermore, hexagonal boron nitride stands up well against acid/alkali acids while remaining relatively nonreactive with ceramic slag and ceramic materials.
As such, BN crucibles have many applications including ceramic melting, silicate melting and metal smelting as well as materials research projects and crystal growth experiments. Unfortunately, due to moisture absorption issues they should be stored away from humid environments and washed with alcohol prior to use.