Iron nitrides

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Iron nitrides are inorganic chemical compounds of iron and nitrogen.

Chemical properties

Iron has five

insoluble in water. At high pressure, stability and formation of new nitrogen-rich nitrides (N/Fe ratio equal or greater to one) were suggested[1] and later discovered. These include the FeN, FeN2 and FeN4 solids which become thermodynamically stable above 17.7 GPa, 72 GPa and 106 GPa, respectively.[2][3][4][5][6]

Health hazards

When heated to decomposition or exposed to humidity, iron nitride may emit toxic fumes of ammonia. It is considered a moderate explosion hazard. Inhalation of iron nitride dust or powder may cause irritation to the respiratory system and possibly acute iron poisoning or pneumoconiosis.

Research applications

Colloidal solution of magnetic iron nitride nanoparticles is a way to create ferrofluids.

Iron nitrides also make the strongest naturally magnetic material.[7][8][9]

References

  1. ISBN 978-1-60595-112-6
    .
  2. ISSN 0925-8388
    .
  3. PMID 28509545
    .
  4. Wikidata Q36374759
    .
  5. PMID 29505253
    .
  6. Wikidata Q55692060
    .
  7. ^ "Iron-nitrogen compound forms strongest magnet known".
  8. PMID 35851914
    .
  9. doi:10.1016/j.actamat.2018.07.049
    . §9. Iron nitride (ɑ″-Fe16N2)
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