Figure 3.

Screening dissolution test for the SmCo₅ (top) and Sm₂Co₁₇ (bottom) permanent magnets at 20 min in 1 vol % Br₂ in EG, DMF, EtOH, MeOAc, and EtOAc. The recovery yields, η (%), were the ratio of the concentration of a metal in solution after leaching for 20 min to the concentration of the same metal if all the content of the coating would be dissolved in solution. Reprinted from ref (34). Copyright 2019 Royal Society of Chemistry under [CC BY-NC 3.0] [https://creativecommons.org/licenses/by-nc/3.0/].