What types of vacuum coating machines are there, and what are their respective functions?

Vacuum coating machines are mainly divided into two categories: Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD).

1. Vacuum Evaporation Coating Machine
Heats the evaporation material in a vacuum chamber so it vaporizes and deposits onto the substrate. Resistive heating evaporation is used for low-melting-point metals such as aluminum, silver, and gold. Electron beam evaporation can deposit high-melting-point materials such as silicon dioxide and titanium dioxide, and is the mainstream method for optical coating. Functions: optical films, metal electrodes, decorative coatings.

2. Vacuum Sputtering Coating Machine
Uses high-energy ions to bombard a target, and the sputtered atoms deposit onto the substrate. Magnetron sputtering offers fast deposition rates and dense films, suitable for large-area coating. Reactive magnetron sputtering can produce compound films such as ITO and TiN. Ion beam sputtering is used for high-precision optical devices. Functions: semiconductors, display panels, photovoltaics, optical coating.

3. Ion Plating Machine
Applies a negative bias to the substrate during evaporation or sputtering, so ion bombardment improves film adhesion. Arc ion plating is used for hard coatings such as TiN and CrN, and is the main method for cutting tools and molds. Functions: wear-resistant coatings, decorative coatings.

4. CVD Equipment
Forms films through gas-phase chemical reactions. PECVD is used for semiconductors, photovoltaics, and display panels. MOCVD is used for LED epitaxy. ALD achieves atomic-level thickness precision. Functions: semiconductor dielectric layers, LEDs, advanced packaging.

5. Other Types
Molecular beam epitaxy is used for research-grade semiconductor epitaxy. Roll-to-roll coating machines are used for continuous coating on flexible substrates, such as packaging barrier films.

Winwin provides all types of vacuum coating machines, with products shipped nationwide and comprehensive after-sales service, including installation, commissioning, technical training, maintenance, and spare parts supply, ensuring stable equipment operation.