Microstructure and Properties of Gravity Sintered 316L Stainless Steel Powder with Nickel boride Addition

Authors

  • Dušan Božić Institute of Nuclear Sciences Vinča, University of Belgrade
  • Miroljub Vilotijević Institute of Nuclear Sciences Vinča, University of Belgrade
  • Jovana Ružić Institute of Nuclear Sciences Vinča, University of Belgrade
  • Uroš Jovanović Institute of Nuclear Sciences Vinča, University of Belgrade
  • Jelena Stašić Institute of Nuclear Sciences Vinča, University of Belgrade

Abstract

The present work demonstrates a procedure for synthesis of stainless steel powder by gravity sintering method. As an additive to the basic powder, NiB powder was added in the amount of 0.2 - 1.0 wt.% . Gravity sintering was done in vacuum, at the temperatures of 1100°C - 1250°C, in the course of 3 - 60 min, using ceramic mould. Structural characterization was conducted by XRD, and microstructural analysis by optical and scanning electron microscope (SEM). Mechanical properties were investigated by tensile tests with steel rings. Density and permeability were determined by standard techniques for porous samples. Gravity sintered stainless steel with NiB addition had more superior mechanical and physico-chemical properties compared to stainless steel obtained by standard powder metallurgy procedures – pressing and sintering.

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Published

2017-12-13

Issue

Vol. 48 No. 3 (2016)

Section

Articles