What is one advantage of using zinc chromate primer?

Zinc chromate primer is well-regarded for its exceptional corrosion resistance properties. This is primarily due to the presence of zinc, which acts as a sacrificial anode. When zinc is exposed to moisture and air, it oxidizes preferentially, providing protection to the underlying metal surface. This prevents rust and other forms of corrosion from forming on the metal substrate, which is especially important in aviation and other applications where metal parts are subjected to harsh environmental conditions.

While it is true that zinc chromate primer may have some benefits in enhancing paint adhesion and that certain types of it can dry relatively quickly, its standout feature is its superior corrosion resistance, which is critical in prolonging the life of metal components. Additionally, zinc chromate primer is not compatible with all paint types; some modern coatings may require different types of primers.