Impact of iron borides on electrical conductivity in steel-clad/ceramic-core wires: An EIS analysis


Zafar H. M. N., NAİR F., Niaz A.

Ceramics International, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.ceramint.2026.02.035
  • Dergi Adı: Ceramics International
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC
  • Anahtar Kelimeler: Deformation processing, In-situ phase synthesis, Iron borides, Microcomposite wires, PM
  • Erciyes Üniversitesi Adresli: Evet

Özet

Deformation processed single/multi-core filamentary composite wires are widely used in the medical, manufacturing and nuclear fields. Although various studies report the synthesis and mechanical superiorities of boriding, their influence on the electrical behavior is not studied – largely due to incompatibility of the 4 PP testing method and the clad-core design of the wires. This study reports the influence of increasing ceramic content (10-15 vol% B4C and borides 57.4-97.8 vol % Fe2B) on the electrical impedance of the single-core 1 mm ceramic wires using electrical impedance spectroscopy. The electrical signals were carefully analyzed to see how the design, content, stage of manufacturing (pre- or post-boriding) and microstructure of the wires influence the electrical impedance. Results showed that while ceramic inclusions (B4C), non-sintered inter-particle boundaries (Fe), and enhanced grain density increase the impedance with dominant resistive character, boriding treatment recrystallizes sheath grains and sinters the Fe particles resulting in reduced impendence at 1 Hz and 1 kHz incident voltage. However, at 1 MHz, rapid alteration of voltage poles enforces dielectric response in the wire components (borides, sintered and non-sintered Fe particles) with different electrical properties causing wires to dominate capacitive character.