Phase diagrams of the ternary systems Mn, Fe, Co, NiSiN

Abstract

Phase equilibria in the ternary systems Mn, Fe, Co, and NiSiN are investigated and isothermal sections at 900°C (FeSiN, NiSiN), at 1000°C (MnSiN, CoSiN) and at 1150°C (FeSiN) are presented. In the system MnSiN, Si 3N 4 coexists with MnSiN 2, Mn 3Si, Mn 5Si 3, MnSi, and MnSi 2− x . In the systems Fe, Co, NiSiN, Si 3N 4 coexists with all binary silicides but reacts rapidly with iron above 1120 ± 10°C, and cobalt and nickel above 1170 ± 10°C to form binary silicides and nitrogen gas.