80nm boron nitride, sphere, white color, Powder Normally people believe that Hexagonal Boron Nitride ... crystal is flate shape. But we have developed BN with sphere like the SEM showing. And also we make XRD approve ... is boron nitride.Now we can get this nano BN sphere with 96% purity.We now study on purifing the powder ... different with normal micron size BN. nano size boron nitride sphere