QSAM's hot pressed boron nitride machinable ceramics
Material Notes:
Hot-pressed BN is sintered at temperatures around 1900°C and pressures up to 2000 psi to form a dense, strong engineering material that is easily machined. As a machinable material, hot pressed boron nitride could be machined into all kinds of customized shapes, as long as the raw material is big enough. The largest size QSAM could supply is 16" x 16" x 8" block.
Pure Boron Nitride ceramics
Grade BN99 and TPBN could be considered as pure boron nitride. BN99 is the regular pure boron nitride, with very low content of calcium oxide as assistant binder. It is the material in routine production and has shorter lead time. Simple shapes only take 2-3 weeks. TPBN is the highest purity hot-pressed boron nitrides commercially available, although the mechanical strength and density is slightly lower than BN99. Pure boron nitride material has low dielectric constant, minimal moisture pick-up, and low loss tangent which makes them ideal for electronic applications or as raw material of crucibles.
Composite boron nitride ceramics
Grade CBN uses a small amount of calcium borate as binder and is less sensitive to moisture. Grade ZCBN is a combination of boron nitride and zirconia. ZCBN has most of the properties of boron nitride, with a lot better wear resistivity. Grade AlNBN is a composite material mostly build by boron nitride and aluminum nitride. Compared with pure BN, it is harder, has better wear resistivity and higher thermal conductivity.
Electrical applications
The unique combination of being both an excellent electrical insulator and thermal conductor makes BN very useful high power electronic applications, including PVD equipment. Easy forming also give it advantage to other ceramics with high thermal conductivity, such as BeO and AlN.
High Temperature Applications
BN is very stable at high temperature in nitrogen or argon atmosphere. BN also has excellent resistance to thermal shock. These properties makes it a great structural material in high temperature applications. On the other hand, BN is quite inert to a wide range of chemicals including metal and halides, even at high temperature. Therefore, BN is also an important material as crucibles, to handle the molten materials.
Temperature stability and excellent resistance to thermal shock makes BN the material of choice in the toughest high temperature applications such as equipment for plasma arc welding, diffusion source wafers, and semiconductor crystal growth equipment & processing.
Summary
At QSAM, we are dedicated to providing our industrial and research customers with a comprehensive range of high-performance boron nitride (BN) ceramic products. Beyond our exceptional high-purity BN ceramics, we have also developed innovative BN composite materials that seamlessly integrate BN with other advanced ceramics to deliver tailored solutions for a wide variety of applications. Engage with our team of ceramic experts, and let us collaborate with you to develop the perfect BN-based material for your specific application. We are dedicated to empowering your success and contributing to the advancement of technology through our exceptional ceramic offerings and personalized support.