HEXAGONAL BORON NITRIDE

一：HEXAGONAL BORON NITRIDE (H-BN) PRODUCTS

 1 ：H-BN PHYSICAL & CHEMICAL PROPERTIES：H-BN is composed of nitrogen atoms and boron toms, has a layered crystal structure similar to that of graphite. It is a white powder showing loose, lubricated, easy to absorb moisture, light and other properties, which is also called "white graphite".

H-BN has theoretical density 2.27g/cm³ and Moh's hardness 2. H-BN possess excellent electrical insulation, dielectric properties, high thermal conductivity, molten melts chemical compatibility, low thermal-expansion coefficient, and good stability at up to 2000°C under a neutral and/or reducing atmosphere, and to 3000°C under a O.IMPa nitrogen atmosphere, while only up to below 1000 °C in oxygen atmosphere.

H-BN is insoluble in water, decomposes very slowly in boiling water, and produces small amount of boric acid and ammonia. It is chemically stable with weak acid and alkali at room temperature, while slightly soluble in hot acid and can be decomposed with molten NaOH and KOH.

2：H-BN PRODUCT SPECIFICATIONS：H-BN products are synthesized at high temperature by using high-quality imported boric acid and melamine as raw materials. They are high quality in terms of h-BN content, trace metal impurities, good crystalline, tailored particle size distribution, as well as multi-morphologies such as tablet, sphere, and aggregates. Basically, our products are classified as four grades as per different downstream demands: ceramics grade (Cera-BN), thermal grade (Therm-BN), cosmetics grade (Cosm-BN), and lubricant grade (Lubr-BN)

(1)：Ceramics Grade (Cera-BN)

Cera-BN graded h-BN products are typically used as high electrical voltage insulating components, evaporator boat for aluminum coating, refractory tube for electrical furnace, additive for electrical ceramics, crucible, and raw material for c-BN synthesis.