Nanomaterials as additives are effective for improving
the strength,
toughness, corrosion resistance, and wear resistance of polymer coatings.
The dimensionality of nanomaterials (0D, 1D, and 2D) has a significant
influence on the anticorrosion performance and mechanism. It is also
desired to develop composite additives using two or more nanomaterials
(0D/1D, 1D/2D, and 0D/2D) to further enhance the anticorrosion performance
of polymer coatings. In this Review, nanomaterials as additives are
categorized according to their dimensionality. Their anticorrosion
performance and microscopic mechanism are comprehensively summarized
and discussed. Then, the synergistic effects of composite additives,
which consist of two or more nanomaterials, are discussed in detail.
Finally, the current issues and research prospects of nanomaterials
as anticorrosion additives for polymeric coatings are discussed.