Home · Spare Parts · PVD Coatings

Physical Vapour Deposition

Physical vapor deposition (PVD) is a variety of vacuum deposition and is a general term used to describe any of a variety of methods to deposit thin films by the condensation of a vaporized form of the material onto various surfaces (e.g., onto semiconductor wafers). The coating method involves purely physical processes such as high temperature vacuum evaporation or plasma sputter bombardment rather than involving a chemical reaction at the surface to be coated as in chemical vapor deposition. The term physical vapor deposition appears originally in the 1966 book Vapor Deposition by CF Powell, JH Oxley and JM Blocher Jr, but Michael Faraday was using PVD to deposit coatings as far back as 1838.

Variants of PVD include, in order of increasing novelty:

  • Cathodic Arc Deposition: In which a high power arc discharged at the target material blasts away some into highly ionized vapor.
  • Electron beam physical vapor deposition: In which the material to be deposited is heated to a high vapor pressure by electron bombardment in "high" vacuum.
  • Evaporative deposition: In which the material to be deposited is heated to a high vapor pressure by electrically resistive heating in "low" vacuum.
  • Pulsed laser deposition: In which a high power laser ablates material from the target into a vapor.
  • Sputter deposition: In which a glow plasma discharge (usually localized around the "target" by a magnet) bombards the material sputtering some away as a vapor. Here is an animation of a generic PVD sputter tool: PVD Animation


PVD is used in the manufacture of items including semiconductor devices, aluminized PET film for balloons and snack bags, and coated cutting tools for metalworking. Besides PVD tools for fabrication special smaller tools mainly for scientific purposes have been developed. They mainly serve the purpose of extreme thin films like atomic layers and are used mostly for small substrates. A good example are mini e-beam evaporators which can deposit monolayers of virtually all materials with melting points up to 3500°C.

Continue reading

ETP Plastics Hardenberg

SOCIAL MEDIA

 

twitter_button ETP Plastics facebook_button.jpg Bekijk video's op ons YouTube kanaal ETP Plastics op Google+

Contact us immediately

Phone : 0031 523 712 402
Fax : 0031 848 838 830

Email: info@etpplastics.nl

Adressdata:

ETP Plastics B.V.
P.O. Box 105
7770 AC  Hardenberg
The Netherlands