Silicon Nitride - Si3N4

Classification: Nitride
Atomic numbers: 14 & 7
Atomic weight: 140
Melting point (C): 1900 (sublimes)
Boiling point (C):
Density (g/cm3): 3.18
Refractive index (n=): 2.0
Hardness (Mosh-scratch): 6-7
Crystal structure: Isometric-normal, alpha: (100) cube, hexagonal-normal, beta: (10T0) prism
Color (solid): Clear/greensih
Cleavage: Imperfect: (001)/(0001)













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