Nickel-based single-crystal superalloys are designed for extreme conditions due to their superior corrosion and creep resistance properties.However, these pose challenges in the subsequent recycling after reaching their end-of-life.Molten magnesium (Mg) can rapidly corrode the read more stable spent nickel-based superalloys and selectively dissolve nickel (Ni).
This waste-free process represents an effective method for recycling spent superalloys and accomplishing metal regeneration.This study investigates the mechanism of selectively dissolving Ni from DD5, a nickel-based single-crystal superalloy, by optimizing process jilungin dreaming tea temperature, time, and Mg content in an inert atmosphere.Vacuum distillation was employed to separate the resulting Mg, residual superalloy (i.
e., the material left post-extraction), and Ni-rich alloy (i.e.
, the metal product selectively extracted).The findings revealed that the residual superalloy after selective Ni dissolution is characterized by a porous skeleton structure with pore sizes predominantly ranging from 2 to 30 nm and a low compressive strength which is 1/10 of the original DD5 superalloy.