Characterization and heat diffusion characteristics of Spark Plasma Sintered Ni-50%Fe Sintered Alloy

M. B. Shongwe, O. O. Ajibola, M. E. Masonyaneng, M. M. Ramakokovhu, P. A. Olubambi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The research findings on the thermal diffusivity, a(T), characteristics of Ni -50%Fe binary alloys produced by ball-milling and Spark Plasma Sintering (SPS) powder processing techniques are reported in this study. The laser flash analysis method was used to evaluate a(T). Graphite coated Ni -50%Fe specimens (cubes) with a perimeter of 4 cm and height of maximum 4 mm were analyzed at temperature range of 50 ~ 400 °C. The initial alloy powder constituents were fcc Ni and bcc Fe; milled together in a planetary ball mill and formed a bcc FeNi solid solution phase that endured throughout the sintering stage, and contained in the microstructure of the finished product. The rate of heat diffusion in metallic Ni - 50%Fe compacts sintered at 800 °C is strongly affected by the intensity of milling/formation of new solid solutions. This value is small for long milling duration feedstock powders, even though the results from both powder feedstock milling apparatus seems to display a declining trend for all Ni - 50%Fe compacts sintered at 800 °C.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalJordan Journal of Mechanical and Industrial Engineering
Issue number1
Publication statusPublished - 2019


  • Laser flash analysis
  • Milling
  • Ni-50%Fe compacts
  • Spark plasma sintering
  • Thermal diffusivity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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