Open AccessA PHASE DIAGRAM OF THE ALLOYS OF THE NEODYMIUM-NICKEL BINARY SYSTEM
Author(s) -
Pan Yu-Ying,
Zheng Jian-Xuan
Publication year - 1985
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.34.384
Subject(s) - intermetallic , eutectic system , neodymium , nickel , phase diagram , materials science , binary system , solubility , phase (matter) , metallurgy , alloy , binary number , chemistry , physics , optics , laser , organic chemistry , arithmetic , mathematics
The neodymium-nickel binary system has been studied by X-ray diffraction method and differential thermal analysis and the phase diagram determined.In this system, the following eight intermetallic compounds were observed: Nd3 Ni (M. P. 590℃), Nd7Ni3(M. P. 616℃), NdNi (M.P.780℃), NdNi2(decomposes at 940℃),NdNi3 (decomposes at 1030℃), Nd2Ni7 (decomposes at 1234℃), NdNi5(M.P. 1420℃)and Nd2Ni17. Intermetallic compound Nd2Ni17 forms peritectically 1300℃ and decomposes through a eutectoid reaction into Ni and NdNi5 at 1250℃. Five eutectics occur: Nd-Nd3Ni (570℃,19at%Ni), Nd3Ni-Nd7Ni3 (565℃,27at%Ni),Nd7Ni3-NdNi (540℃,35at%Ni),NdNi-NdNi2(720℃,56at%Ni) and Nd2Ni17-Ni (1290℃,91at%Ni). Neither Nd in Ni nor Ni in Nd shows any detectable solid solubility.