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本文用X射线衍射和差热分析方法测定了Nd-Ni二元系合金相图。 在此二元系中观察到如下八个金属间化合物:Nd_3Ni(熔点为590℃),Nd_7Ni_3(熔点为616℃),NdNi(熔点为780℃),NdNi_2(940℃分解),NdNi_3(1030℃分解),Nd_2Ni,(1234℃分解),NdNi_5(熔点为1420℃)和Nd_2Ni_(17)。于1300℃由包晶反应形成的金属间化合物Nd_2Ni_(17)在1250℃即共析分解为Ni及NdNi_5。存在五个共晶反应:Nd-Nd_3Ni(570℃,～19at％Ni),Nd_3Ni-Nd_7Ni_3(565℃,～27at％Ni),Nd_7Ni_3-NdNi(540℃,～35at％Ni),NdNi—NdNi_2(720℃,56at％Ni)和Nd_2Ni_(17)-Ni(1290℃,91at％Ni)。Nd在Ni中或Ni在Nd中均无明显的固溶度。
In this paper, X-ray diffraction and differential thermal analysis of the Nd-Ni binary system alloy phase diagram. The following eight intermetallic compounds were observed in this binary system: Nd_3Ni (melting point of 590 ° C), Nd_7Ni_3 (melting point of 616 ° C), NdNi (melting point of 780 ° C), NdNi_2 (940 ° C), NdNi_3 (1030 ° C Decomposition), Nd 2 Ni (1234 ℃ decomposition), NdNi 5 (melting point 1420 ℃) and Nd 2 Ni 17. The intermetallic compound Nd_2Ni_ (17) formed by peritectic reaction at 1300 ℃ was eutectoidly decomposed into Ni and NdNi_5 at 1250 ℃. There are five eutectic reactions: Nd-Nd 3 Ni (570 ℃, ~ 19at% Ni), Nd_3Ni-Nd_7Ni_3 (565 ℃ ~ 27at% Ni), Nd_7Ni_3-NdNi (540 ℃, ~ 35at% Ni), NdNi-NdNi_2 720 ° C, 56at% Ni) and Nd_2Ni_ (17) -Ni (1290 ° C, 91at% Ni). Nd in Ni or Ni in Nd were no significant solid solubility.