Coating is primarily needed to prevent corrosion and protect the basic structure of materials, while also contributing to aesthetic appeal and maintaining colour.
Core Functions of Coatings
According to the provided reference, the fundamental reasons for applying a coating are centered around protection and preservation:
- Corrosion Prevention: One of the main roles of a coating is to act as a barrier that prevents or significantly slows down the process of corrosion, which can degrade the underlying material.
- Structural Protection: Coatings serve to shield the basic structure from various environmental factors and potential damage, thereby preserving its integrity and lifespan.
Beyond Protection: Aesthetic Benefits
While protection is primary, coatings also serve important aesthetic purposes:
- Pleasing to the Eye: Coatings enhance the visual appearance of a structure or object, making it more attractive.
- Colour Maintenance: A good coating helps the surface maintain its intended colour over time, resisting fading or discoloration.
Furthermore, the application of the coating itself is highlighted as a crucial characteristic, particularly when dealing with structures that have intricate shapes like corners, edges, and recesses, where proper coverage is essential for effective protection and appearance.
