What are the commonly used coating materials?

There are many kinds of coating materials. According to different applications and performance requirements, different materials are selected for coating. Common coating materials include:

1. Metal film: such as aluminum, copper, chromium, titanium, zinc, etc. , commonly used in electronics, semiconductors, optics, decoration and other fields.

2. Metal oxide films: such as alumina, zirconia, titania, indium tin oxide, etc. , commonly used in optics, protection, electronics, ceramics and other fields.

3. Metal nitride films: such as aluminum nitride, tungsten nitride, titanium nitride, etc. It has high hardness, high melting point, high wear resistance and corrosion resistance, and is often used in tools, automobiles, aviation and other fields.

4. Non-metallic films: such as silicon dioxide, fluoride, carbide, silicon nitride, etc. , commonly used in electronics, optics, protection and other fields.

5. Organic film: such as polymer, plexiglass and silica gel. , commonly used in electronics, decoration, protection and other fields.

6. Biofilm: such as protein, lipids, nucleic acids, etc. , commonly used in biomedicine, food and other fields.