Metallurgical and Materials Transactions B

, Volume 3, Issue 11, pp 2851–2855 | Cite as

The Nd-Zn phase diagram

  • J. T. Mason
  • P. Chiotti
Alloy Phases and Structure


Metallographie, thermal, and X-ray techniques were used to determine the phase relations in the Nd-Zn system. Eight compounds, three eutectics and a eutectoid were found. The compounds NdZn, NdZn2, and Nd2Znn melt congruently at 923°, 925°, and 981°C respectively. The compounds Nd3Zn11, NdZn4.46, and Nd3Zn22 undergo peritectic decomposition at 870°, 902°, and 950°C respectively, while NdZn3 undergoes peritectoid decomposition at 849°C. The eutectics occur at 12 wt pct Zn and 630°C, 38 wt pct Zn and 868°C, and 56 wt pct Zn and 854°C. The eutectoid occurs at 4 wt pct Zn and 622°C. The existence of a NdZn12 phase of the SmZn12 type structure has been confirmed. An allotropie transformation between the tetragonal NdZn11 structure and the hexagonal NdZn12 defect structure is proposed.


Boron Nitride Neodymium Thermal Arrest NdZn Peritectic Decomposition 
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Copyright information

© The Metallurgical of Society of AIME 1972

Authors and Affiliations

  • J. T. Mason
    • 1
  • P. Chiotti
    • 2
    • 3
  1. 1.Ames Laboratory of the U. S. Atomic Energy CommisionAmes
  2. 2.Ames Laboratory of The U. S. Atomic Energy CommissionUSA
  3. 3.Iowa State UniversityAmes

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