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Oxidation resistant tungsten-based alloys for high temperature application

CEIT-IK4 is a non-profit research centre located in San Sebastian, Spain, whose main task is to carry out industrial research projects under contract, in collaboration with R&D departments of companies. CEIT-IK4 works on the development of Self-passivating tungsten-based alloys for the first wall of fusion reactors and provides major safety advantage compared to pure W incase of a LOCA with simultaneous air ingress, due to the formation of a protective scale preventing the formation of volatile and radioactive WO3. Potential non-fusion applications are all those high temperature fields for which pure tungsten would be a good option but its poor oxidation resistance prevents its use or leads to short in service lifetime: electrodes, electrical contacts, balancing weights in gas turbine rotors, components in high temperature furnaces…

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