1. Physical Vapor Deposition (PVD) is a method that utilizes vacuum technology to prepare superalloy coatings on surfaces. By heating materials in a vacuum chamber to turn them into gaseous state, and then using ion bombardment or magnetron sputtering methods to deposit the materials onto the surfaces to be coated.

2. In the aviation industry, PVD coatings are used for the surface protection of aircraft engines and structural components. PVD coatings can enhance the high-temperature resistance and oxidation resistance of components, extend their service life, and ensure safety and reliability.

3. Powertech products are used for depositing surface protection coatings on structural components, like copper, aluminum and other film layers.