Thin Coatings of Polymeric Carbon and Carbon Nanotubes for Corrosion Protection

摘要

SUMMARY: Three types of nanotechnology-based passive and smart barrier coatings for corrosion protection discussed (1) Plasma-deposited conducting carbon polymer PPN can be used to protect small device or engine components and has been demonstrated to protect PEM fuel cell current collecting bipolar metal plates; (2) Carbon nanotube pints/links can form smart protective coatings via p-n junction layers which can electrically sense coating damage due to corrosion (3) semiconducting, thermochromic polydiacetylene paints undergo irreversible color changes which can become reversible in the presence of chemical reactions induced by corrosion.