Overview
Chromium interconnects are a class of high-chromium ferritic alloys developed specifically for intermediate-temperature SOFCs (600–1000 °C). The typical composition is around Cr–Fe–Y with very high chromium content, designed to form a stable, conductive, and protective chromia (Cr₂O₃) layer during operation. The interconnect serves two critical functions: one is Electrical conduction between adjacent cells and another is Gas separation between the fuel and oxidant compartments. The Cr interconnects were developed through powder Metallurgy process for the size of 106 X 106 X 2.5 cu.mm at ARCI
Key Features
- Excellent oxidation resistance
- Low Area Specific Resistance (ASR).
- Thermal stability
- Coefficient of Thermal Expansion matches with electrodes
Long life
Potential Applications
- Solid Oxide Fuel Cell
Technology Readiness Level (TRL)
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- Processing powders of a refractory metal-based alloy for high-densification, Sudhakara Sarma Sreedhara, Ranganathan Sundareshan, US2009/0068055A1.