Comparative study of conventionally sintered Co-Ni-Al alloy with spark plasma sintered alloy

Authors

  • G. Johnsy Arputhavalli Department of Physics, Karunya University; Department of Physics, Coimbatore Institute of Technology
  • S. Agilan Department of Physics, Coimbatore Institute of Technology
  • M. Dinesh Department of Physics, Coimbatore Institute of Technology
  • S. J. Vijay Department of Physics, Coimbatore Institute of Technology
  • Roy Johnson Department of Physics, Coimbatore Institute of Technology

Abstract

Co-Ni-Al alloy samples were prepared by compacting the powdered alloy at various pressures in proper stoichiometric ratio and the high density compacted alloy was sintered at 673 K. The magnetic, mechanical properties, microstructure and phase analysis were studied and compared with that of spark plasma sintered (SPS) alloy. The sintered alloy exhibit martensitic twin variants with β phase structure. Along with the diffused particle, few agglomerated clusters were observed on the topographic images. The magnetic and the mechanical studies of the test specimens were investigated using the vibrating sample magnetometer, pin on disk tribometer and universal testing machine respectively. The coercivity value and the ductility of the SPS alloy are higher than the same of the as-sintered alloy.

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Published

2018-06-13

Issue

Vol. 50 No. 3 (2018)

Section

Articles