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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Thermal Evaporation History Part Two (From early 1900s to mid 1900s)
In 1912 von Pohl and Pringsheim reported forming films by evaporation materials in a vacuum from a magnesia crucible that was heated by a resistively heated foil surrounding the crucible. They are sometimes credited with the first deposition by thermal evaporation in vacuum. In 1913, Langmuir studied the vaporization rate of materials in vacuum andContinue reading “Thermal Evaporation History Part Two (From early 1900s to mid 1900s)”
Thermal Evaporation History Part One (From late 1800s to early 1900s)
Thermal evaporation or vacuum evaporation is the vaporization of the evaporation material by heating to a certain temperature, so that the vapor pressure becomes appreciable, and the surface or molecules are lost from the surface in the vacuum. Vaporization can come from the surface of a liquid or from the surface of a solid. TheContinue reading “Thermal Evaporation History Part One (From late 1800s to early 1900s)”
Vacuum Evaporation Coating 