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<p>CuFe<sub>2</sub>O<sub>4</sub> coating was deposited on SUS 430 steel via electrophoretic deposition (EPD) for use in solid oxide fuel cell (SOFC) interconnects. The coated steel was then oxidized in air at 800&#xa0;°C for 10&#xa0;weeks. The oxide scale displayed dual-layer structure with an inner Cr<sub>2</sub>O<sub>3</sub> layer and an outer CuFe<sub>2</sub>O<sub>4</sub> spinel layer. The scale ASR was 14.32&#xa0;mΩ&#xa0;cm<sup>2</sup> at 800&#xa0;°C after 10&#xa0;weeks of oxidation. CuFe<sub>2</sub>O<sub>4</sub> coating not only suppressed the growth of Cr<sub>2</sub>O<sub>3</sub> and the outward diffusion of Cr species but also effectively enhanced the electrical performance of the surface scale.</p>

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High Temperature Performance of SUS 430 Steel Interconnect with CuFe2O4 Spinel Coating Via Electrophoretic Deposition

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Shixiao Sun,
  • Shujiang Geng,
  • Gang Chen,
  • Fuhui Wang

摘要

CuFe2O4 coating was deposited on SUS 430 steel via electrophoretic deposition (EPD) for use in solid oxide fuel cell (SOFC) interconnects. The coated steel was then oxidized in air at 800 °C for 10 weeks. The oxide scale displayed dual-layer structure with an inner Cr2O3 layer and an outer CuFe2O4 spinel layer. The scale ASR was 14.32 mΩ cm2 at 800 °C after 10 weeks of oxidation. CuFe2O4 coating not only suppressed the growth of Cr2O3 and the outward diffusion of Cr species but also effectively enhanced the electrical performance of the surface scale.