Nickel Boride

Nickel borides are inorganic compounds with the chemical formula NixBy, where x and y vary. A common formula is Ni2B, which is available in two forms, known as P−1 and P−2. Other less common borides of nickel are NiB, Ni3B, o-Ni4B3 and m-Ni4B3 (o for orthogonal, m for metastable).
This article focuses mainly on the most common nickel boride, Ni2B.