ニッケルー珪素系平衡状態圖

抄録

The equilibrium Diagram of the system nickel-silicon has been thoroughly investigated by means of thermal, microscopic, X ray, and magnetic analyses, and a new diagram has been proposed. In this system there exist six compounds, i.e., Ni5Si₂, Ni₂Si, NiSi, Ni₃Si, NiSi₂, and Ni₃Si₂. The first three primarily crystalise from liquid, the melting points of which being respectively 1, 255°C, 1, 285°C, and 992°C, while the next three are formed by the following peritectic or peritectoid reactions:
θ is a solid solution of the crystal type of Ni₂Si containing 23·5 per cent. silicon, and the compound NiSi₂ undergoes an allotropic change at 981°C.