Siliciumnitrid
Our products can also be ordered in small quantities.
We are happy to advise you.07031-4285124 / info@xtra-gmbh.com
Structurally
hexagonal boron nitride(HBN) very similar to graphitewhich is why it is occasionally in the literaturealso as "white" graphitereferred to as . The 2-dimensionalNetwork of (BN) 3-rings formsLayered structures that are as platelikeParticles in contrastdue to isoelectric graphitethe missing free electrons colorlessand electrically insulating, but just like thatthermally conductive and "lubricious"are, That is not naturaland very soft material (Moh's hard1-2) continues to showone for inorganic ceramic
Materials very high melting orDecomposition point from (2700-3000 ° C) at a relatively lowDensity (2.25g / cm 3).
technical features
Classicalapplication-relevant propertiesareits lubricating effectsimultaneous high thermal stabilityand oxidation resistance,the hBN in many areas about graphiteput . Due to its chemical inertnessor very low "surface activity",which, for example, in theNon-wettability by manyMelts (salts, glaziers, metals),hexagonal boron nitride is alsocompared to many typical refractory materialsin terms of toxicity andEnvironmental compatibility at an advantage.
use
High temperature solid lubricant:
The graphite-like hexagonal modification (α-boron nitride) is used as a lubricant ("inorganic" or "white graphite"). In contrast to graphite, the friction coefficient of hexagonal boron nitride remains stable up to more than 1000 ° C, which is why it is very well suited as a high-temperature solid lubricant under vacuum.
Production of β-boron nitride (CBN):
At high temperature (1400-1800 ° C) and high pressure (> 6 GPa), the hexagonal changes into the cubic modification, analogous to the transformation of graphite into diamond. Both boron nitride modifications are white and do not conduct electricity at low and moderate temperatures.
cosmetics:
The high hiding power and the graphite-like texture which is advantageous for application are the decisive properties for use in make-up.
Water treatment or purification:
A porous sponge of boron nitride is capable of absorbing about 33 times its own weight in oil and organic solvents. After burning or evaporation of the absorbed liquids, the filter sponge can be recovered unchanged. This property could be used for water treatment or purification
data sheet
For inquiries please specify the product code. We are happy to send
Samples for test purposes,