AlN also has good miscibility with other nitrides, making it interesting to many ternary materials with e.g., Ga 10 , In , Ti 12 or Hf 13 , thereby increasing the range of its possible applications. One such ternary material is meta-stable AlxTi1-xN where the cubic rock salt structure of TiN is preserved while varying Al content. AlxTi1-xN primarily finds use as a hard material in protective coatings, often on cemented carbide tool inserts due to its excellent resistance against corrosion and oxidation, and high hardness. These properties can be tuned with the chemical composition.