Evaporation, or more specifically, Resistance Thermal Evaporation, involves the heating of the evaporation material within a vacuum environment. The materials used in vacuum evaporation are usually made into pellets, so they are also called evaporation pellets. These pellets are heated to a temperature above which the vapor pressure of the material exceeds that of theContinue reading “Evaporation Pellets Used in Thermal Evaporation”
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Evaporation Materials for Thin Film Coatings
Vacuum Evaporation is a form of physical vapor deposition (PVD) where material is heated to a high vapor pressure, often in molten state. Then, the vapors are condensed on to a substrate to form a desired thickness of a thin film. The heating is typically accomplished via resistive heating or by E-beam (electron beam). MaterialsContinue reading “Evaporation Materials for Thin Film Coatings”
4 Types of Vacuum Evaporation Coating
Resistance evaporation The resistance evaporation source is used to evaporate low melting point materials such as gold, silver, zinc sulfide, magnesium fluoride, chromium oxide, and the like. The resistance evaporation source is generally made of tungsten, molybdenum or tantalum. Electron beam evaporation The evaporating material is vaporized and evaporated by electron beam heating, and condensed on the surface of the substrate to form aContinue reading “4 Types of Vacuum Evaporation Coating”
Vacuum Evaporation Coating 