FAQs
ABOUT FERROMANGANESE
ABOUT BORON NITRIDE
- • What is a high-performance resin filler?
- • Why has BN been the subject of so much attention amongst ceramic fillers?
- • What kind of crystal structure is found in BN?
- • How do you guarantee the safety of BN used in cosmetics?
- • BN powder does not mix well with resins and it is difficult to increase the amount of BN added. Is there an alternative solution?
- • Is it possible to improve the workability of sintered ceramic bodies?
- • BN is difficult to use in its powdered form, but is there a way to deal with this?
Electrical components used in modern electrical appliances, OAs and motor vehicles are experiencing high-densification of their CPUs coupled with an increase in loading. As a result, the heat of the CPU must be dissipated to the outside of the component. This is currently a large problem. As a resin with low thermal conductivity is used to discharge heat, blending this with a ceramic powder with high thermal conductivity will improve the dissipation qualities of the resin. This ceramic powder is referred to as performance-enhancing BN filler.
BN has the following special characteristics.
• A low dielectric constant and a small signal propagation delay
• Excellent electrical insulating properties and superior dielectric strength
• 2 to 3 times the thermal conductivity of alumina
Owing to these characteristics, BN is favored as a filler for the next generation.
There are various forms of BN, one of which its crystal structure is analogous to carbon; another to diamonds. That which resembles diamonds is c-BN (cubic boron nitride), whilst h-BN (hexagonal boron nitride) resembles graphite. c-BN is one of the materials known to be as hard as diamond and is consequently used in tools.
Our SHP-grade BN has been approved by the Comprehensive Licensing Standards of Cosmetics by Category 1994 and is permitted world-wide for use in cosmetic applications. At Mizushima Ferroalloy, we manufacture under the strict guidelines of the International Organization for Standardization for quality assurance (ISO 9001) and environmental management (ISO 14001).
BN powder does not mix well with resins and it is difficult to increase the amount of BN added. Is there an alternative solution?
Up to now, BN have only existed in flat particle forms and as a powder have had poor filling capacity. Our new product, the HP-40, is manufactured as an aggregate form, with a completely different raw material and process to existing BN. This shape-control technology has allowed us to increase the amount of BN added by a far greater amount than existing products. Furthermore, we also produce BN in spherical form , so that it can be used for improving filling capacity.
With our FS-grade BN for sintered bodies, it is possible to greatly increase the workability for all types of ceramics.
We produce a lineup of coating agents through the process by which powder is slurried. Depending on the purpose, it is possible to achieve greater ease-of-use with BN powders.