Mn4N

Mn₄N is an interstitial metal nitride compound combining manganese with nitrogen, belonging to the family of transition metal nitrides. This material is primarily of research interest for potential applications requiring high hardness and wear resistance, though it remains largely experimental compared to established engineering nitrides like TiN or CrN. Its development is driven by applications in protective coatings, cutting tools, and hard surface engineering where improved thermal stability or cost advantages over traditional nitride ceramics might be realized.