The document summarizes research into the corrosion behavior of amorphous multiple-layer carbon coatings. The researchers studied the corrosion resistance of such coatings in different environments. They found that the coatings exhibited excellent corrosion resistance in 3M NaCl solution due to their dense structure and composition of sp2 and sp3 carbon bonds. However, corrosion occurred in H2SO4 solution due to chemical etching of the coating layers. Overall, the amorphous multiple-layer carbon coatings showed potential for corrosion protection applications due to their high hardness and corrosion resistance in various corrosive media.