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<p>Iron foams is a promising alternative for low-density metallic foams due to Superior mechanical properties and lower cost. Present study demonstrates the fabrication of iron foams using organic space holders, Such as camphor, sawdust, and naphthalene. Powder metallurgy approach is adopted for fabrication of iron foams involving uniaxial compaction followed by sintering. The increment in the compaction pressure was found to decrease the porosity in the fabricated foam. Camphor yields highest porosity in the iron foam amongst the investigated spacers, having a porosity of 71% and density of 2.11&#xa0;g/cc at 30&#xa0;MPa. The iron foams have characteristic micro-pores, inherent to the iron powder and open cell macropores formed due to melting of space holders with sintering. The elastic modulus was found to be inversely related to the porosity, and empirical model depicts elastic modulus as a third-order polynomial function of porosity.</p>

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Development of Iron Foams Using Different Organic Space Holders

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Abhijeet P. Moon,
  • Thamadala N. Surya Akshit,
  • Shrey Agrawal,
  • Kameswara Srikar Sista,
  • Srinivas Dwarapudi,
  • Karneedi Karthik,
  • T. K. Bandyopadhyay,
  • Siddhartha Misra

摘要

Iron foams is a promising alternative for low-density metallic foams due to Superior mechanical properties and lower cost. Present study demonstrates the fabrication of iron foams using organic space holders, Such as camphor, sawdust, and naphthalene. Powder metallurgy approach is adopted for fabrication of iron foams involving uniaxial compaction followed by sintering. The increment in the compaction pressure was found to decrease the porosity in the fabricated foam. Camphor yields highest porosity in the iron foam amongst the investigated spacers, having a porosity of 71% and density of 2.11 g/cc at 30 MPa. The iron foams have characteristic micro-pores, inherent to the iron powder and open cell macropores formed due to melting of space holders with sintering. The elastic modulus was found to be inversely related to the porosity, and empirical model depicts elastic modulus as a third-order polynomial function of porosity.