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      https://www.ias.ac.in/article/fulltext/boms/033/04/0501-0508

    • Keywords

       

      Phosphoric iron; corrosion; powder metallurgy; forged; ancient iron.

    • Abstract

       

      The corrosion behaviour of phosphoric irons containing 0.35 wt % P, 2% copper, 2% nickel, 1% silicon, 0.5% molybdenum, with/without 0.15% carbon prepared by powder forging route were studied in different environments. The various environments chosen were acidic (0.25 M H2SO4 solution of pH 0.6), neutral/marine (3.5% NaCl solution of pH 6.8) and alkaline (0.5 M Na2CO3 + 1.0 M NaHCO3 solution of pH 9.4). The corrosion studies were conducted using Tafel extrapolation and linear polarization methods. The studies also compare Armco iron with phosphoric irons. It was observed that the addition of carbon improved the corrosion resistance of a Fe–0.35%P–2%Ni–2%Cu–1%Si–0.5%Mo alloy in all the environments. Corrosion rates were highest in acid medium, minimal in alkaline medium and low in neutral solution. SEM/EDAX was used to characterize the compositions.

    • Author Affiliations

       

      Yashwant Mehta1 Shefali Trivedi2 K Chandra3 P S Mishra3

      1. Metallurgical and Materials Engineering Department, National Institute of Technology Srinagar, Srinagar 190 006, India
      2. Department of Mechanical Engineering, Indian Institute of Technology, New Delhi 110 016, India
      3. Metallurgical and Materials Engineering Department, Indian Institute of Technology, Roorkee 247 667, India
    • Dates

       
  • Bulletin of Materials Science | News

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