OXIDATION OF AN ELECTRODEPOSITED Cu-30Ni-20Cr NANOCOMPOSITE
Cu-30Ni-20Cr纳米复合镀层的高温氧化行为

A novel electrodeposited Cu-rich Cu-30Ni-20Cr nanocomposite was fabricated on pure copper substrate by co-electrodeposition of Cu-Ni alloy base (mean grain size: 60 nm) with Cr nanoparticles (meansize: 28 nm) from a sodium citrate bath. Compared with electroplated Cu-40Ni alloy film prepared using the same bath, the Cu-30Ni-20Cr nanocomposite exhibited an extremely low oxidation rate in air at 800oC, due to the fast formation of a continuous Cr2O3 scale. The effect of the Cr nanoparticles on the oxidation behavior of the Cu-Ni-Cr nanocomposite films is discussed in detail.