SEARCH Articles Figures Tables Boron Nitride with Sphalerite Structure (P-BN) Boron nitride BN, sintered Hexagonal Boron Nitride (h-BN) Hexagonal Boron Nitride with Graphite-Type Structure (a-BN) and Other Structures of Normal Density Physical Adsorption on Hexagonal Graphitic Boron Nitride (a-BN)