Sandvik Sanergy® HT

Sandvik’s advanced state-of-the-art roll to roll coating lines for mass production combined with commercially available ferritic stainless steel provides an outstanding opportunity for the cost-effective industrial mass production of interconnects for solid oxide fuel cells.

Benefits of Sandvik coated steel strip

Sandvik Sanergy® HT coating will drastically reduce chromium evaporation from the plate during service in the stack. The coating also increases the corrosion resistance properties of the interconnect. This can be seen by the smaller mass gain and a thinner Cr2O3 layer formation after long term exposure of the material at 800℃.

Good adhesion of the coating enables the forming of the coated stainless strip steel to the desired interconnect shape. The self-healing properties of the coating ensure the same excellent performance of Sanergy® HT before and after forming. Any microscopic cracks introduced to the coating by forming will heal and disappear completely during the operation of the fuel cell.

Ferritic stainless steel is used as the standard stainless steel for coating. However, other grades may be available on request.

Main characteristics of Sandvik Sanergy® HT coated steel strip steel for SOFC interconnects

  • Minimizes chromium evaporation
  • Low area-specific resistance
  • Excellent high-temperature corrosion resistance ensures low electrical degradation.
  • Good processing and forming characteristics
  • Well-matched thermal expansion to other cell components

Fuel cells

Read more about fuel cells and our materials for fuel cells.