SYNTHESIS & CHARACTERIZATION OF STAINLESS STEEL FOAM VIA POWDER METALLURGY TAKING CRUSHED UREA AS SPACE HOLDER

Shailendra Joshi, Gaurav Kumar Gupta, Amit Telang

Abstract: Stainless steel foams are produced via powder metallurgy process taking crushed urea as space holder contributing porosity with 40-60 volume %. The pores formed by taking crushed urea as space holder produces nearly circular voids & they shrink after sintering. With increase in porosity regularity starts diminishing in the stainless steel foam samples. The foam samples obtained taking crushed urea particles don’t show any plateau region during compression test & are ductile in nature. The yield strength of the foam decreases with increase in porosity. Therefore the stainless steel foams manufactured using crushed urea particles can be used in light weight high strength applications e.g. structures.

Keywords: Crushed; Porosity; Powder metallurgy; Stainless steel foams; voids.

DOI: https://doi.org/10.15623/ijret.2015.0406086