2021 Volume 57 Issue 7 Pages 291-297
In order to prevent surface color change of the metals and generation of metal oxide on the surface, variety
of approaches has been investigated for many years. Here, polymeric molecular coatings of polymers having
a thiol group at the chain end were reviewed. The polymeric molecular coatings have advantages in simple
preparation by immersion of the specimens into solution of the thiol-terminated polymers, and in low electric
resistance on the metal surface. High oxidation resistance property on metal surface with the molecular
coatings was evaluated by surface electrical resistance measurements after heat treatment of the specimen in
air. Quantitative evaluation of metal oxide on the surface by cyclic voltammetry measurements supports the
property of the coatings. Quantitative evaluation also showed that the higher air oxidation resistance property
was provided by longer polymer chain of the coating, whereas shorter chain gave higher electrochemical
oxidation resistance properties on the surface. Versatility of the polymeric molecular coatings such as PMMA
coatings and polymeric coatings on nickel is briefly reviewed as well.
