Corrosion behaviour of EUROFER in Pb–17Li at 500 °C

Ferritic steel-blanket systems integration R&D—Compatibility assessment

“…It was confirmed that the corrosion rate of the ferritic-martensitic steels was five times slower than that of the SUS316 steel [36]. The past data is summarized in Table 4 [ [35][36][37][38][39][40] with those tested in lithium [37,41]. Although the test periods were limited to 6000 h at most in the temperature range from 723 to 823 K, the evaluated corrosion rate of ferritic-martensitic steels is less than 100 m/year below 755 K. It should be noticed that the corrosion rate significantly increases with increasing the test temperature: 370 m/year at 873 K [35].…”

Long-term corrosion behavior of martensitic steel welds in static molten Pb–17Li alloy at 550°C

“…W is presumably much less soluble in Pb-17Li than either Fe or Cr. As the corrosion time increased, the main elements dissolved more rapidly from the matrix evidenced by W becoming more rich on the surface [11,23]. The significant dissolution of Fe (and Cr) from the CALM steel weld into Pb-17Li led to the decomposition of M 23 C 6 carbides as evidenced by the loss of carbides near surface [24].…”

The European breeding blankets development and the test strategy in ITER

“…The main concerns are here the corrosion of EUROFER and the MHD phenomena. EU studies [5,6] have shown that flowrates of the order of 5-50 mm/s at operational temperatures around 500-550 • C were not leading to unacceptable corrosion rates. A EU R&D program has been re-launched to check MHD phenomena, in particular with regard to flow coupling, non-isotropic wall conductance and interaction of forced and buoyancy forces [7].…”