Interstitial Compounds

Rarely Tested

Definition: Compounds formed when small atoms (H, C, N, B) occupy interstitial sites within transition metal lattices.

Properties:

  • High melting point
  • High hardness
  • Chemical inertness

Examples:

  • $$\mathrm{TiC}$$
  • $$\mathrm{Fe_3C}$$ (cementite)
  • $$\mathrm{TiH}$$
  • $$\mathrm{VH}$$
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