What issue can arise from applying inorganic zinc too thickly?

Applying inorganic zinc too thickly can lead to mud cracking, a condition where the surface develops cracking patterns resembling dried mud. This happens because when the zinc coating is applied in excess, it can lead to uneven curing and drying. The outer layer may dry and harden more rapidly than the inner layer, creating stress as the coating continues to cure, which can result in the formation of cracks.

Inorganic zinc coatings are often used for their excellent corrosion resistance and ability to provide a protective barrier. However, the thickness of the application is critical to ensure proper adhesion and the expected protective performance. When the coating is thicker than recommended, it may not allow for adequate bonding to the substrate or may create internal stresses that compromise the coating's integrity.

Understanding the application guidelines and adhering to the recommended thickness is essential in preventing issues like mud cracking and ensuring the coating performs effectively in protecting the underlying surface from corrosion and other environmental factors.