The main purpose of coating is to change or enhance the surface properties of materials to meet specific application requirements. The following are some of the main purposes of coating:

Improving wear resistance: By coating a wear-resistant thin film on the surface of the material, its wear resistance can be significantly improved and its service life can be extended.

Enhance corrosion resistance: Coating a corrosion-resistant thin film on the surface of metal or other easily corroded materials can prevent or slow down the corrosion process of the material.

Improving optical properties: Coating can change the optical properties such as reflectivity, transmittance, and color of material surfaces, and is commonly used in optical devices, decorations, and other fields.

Improving heat resistance: Some coating materials have excellent heat resistance, which can protect the substrate from damage in high temperature environments.

Enhance conductivity or insulation: As needed, a thin film of conductivity or insulation can be coated on the surface of the material to meet the application requirements of electronic devices or insulation materials.

Improving Decoration and Aesthetics: By coating, the surface of materials can have unique colors, luster, and textures, enhancing their decorative and aesthetic appeal.

Increasing hardness: Some coating materials have high hardness, which can significantly improve the surface hardness of the material and prevent scratches and wear.

Protecting the substrate: Coating can protect the substrate from external environmental erosion and damage, such as ultraviolet radiation, chemicals, etc.

Providing biocompatibility: Coating on medical devices can provide biocompatibility and reduce rejection reactions.

Reduce friction and wear: Coating mechanical components can reduce friction and wear, and improve their service life.

By coating, the performance and aesthetics of materials can be significantly improved, making them better suited for various application scenarios. Choosing appropriate coating materials and processes can meet specific performance requirements and achieve optimal investment returns.