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The corrosion of cast coarse grain and laser-remelting fine grain Ni-Cr alloys in molten (Li,Na,K)F at 700°C under Ar has been investigated by electrochemical and thermogravimetric methods with an attempt to understand the effect of grain refinement on the corrosion of the alloys. The results indicate that grain refinement remarkably accelerates the dissolution of Cr, leading to the formation of a...
The effects of two oxidizing species, H2O and CrF3, on the corrosion of pure metals Ni, Fe and Cr in molten (Li,Na,K)F at 700°C were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results indicated that Ni, Fe and Cr were all in active dissolution state at the corrosion potential and the corrosion current densities were significantly increased when 2%...
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