Physical Vapor Deposition

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Basic principles of PVD process

Physical Vapor Deposition processes usually include a variety of specific methods such as evaporation, sputtering, and ion plating. Regardless of the method used, the basic principle of Physical Vapor Deposition is to vaporize the material from the source through high-temperature heating or ion bombardment. The vaporized material moves in the form of atoms or molecules in a vacuum or low-pressure environment and condenses into a thin film on the surface of the substrate. This process is mainly achieved by physical means, thus avoiding the influence of chemical reactions on the purity of the material.

Advantages of Physical Vapor Deposition technology

High purity and high density: PVD deposited films usually have high purity and density, which can significantly improve the performance of the coating, such as wear resistance, corrosion resistance and hardness.

Strong film adhesion: The PVD process can form a film with strong adhesion on the substrate, ensuring that the film is not easy to peel off during use, extending the service life of the product.

Wide range of material selection: PVD technology can be applied to a variety of materials, including metals, ceramics and alloys, and can prepare various functional coatings, such as conductive, insulating, heat-resistant and anti-oxidation coatings.

Environmental protection and sustainability: Compared with processes such as chemical vapor deposition (CVD), the Physical Vapor Deposition(PVD) process is more environmentally friendly, does not involve the generation of harmful gases, and reduces pollution to the environment.

Application of PVD technology

Semiconductor industry: In semiconductor manufacturing, Physical Vapor Deposition is often used in the preparation of thin film electrodes, diffusion barriers and metal interconnects to ensure that the components have good conductivity and stability.

Optical devices: Physical Vapor Deposition technology is widely used in optical coatings, such as anti-reflective coatings for mirrors and lenses, and the manufacture of optical filters to improve the performance of optical devices.