Thin Film Substrates
Electron Beam (E-Beam) Evaporation is a form of Physical Vapor Deposition in which the target material to be used as a coating is bombarded with an electron beam from a charged tungsten filament to evaporate and convert it to a gaseous state for deposition on the material to be coated. Taking place in a high vacuum chamber, these atoms or molecules in a vapor phase then precipitate and form a thin film coating on the substrate.
E-Beam Evaporation, which is a Thermal Evaporation process, and Sputtering are the two most common types of Physical Vapor Deposition (PVD). Of these two processes, The E-Beam Deposition technique has several clear advantages for many types of applications.
1. It permits the direct transfer of energy with the Electron Beam to the target material to be evaporated making it ideal for metals with high melting points. Electron Beam Evaporation can yield significantly higher deposition rates - from 0.1 nm per minute to 100 nm per minute - resulting in higher density film coatings with increased adhesion to the substrate.
2. E-Beam Evaporation also has very high material utilization efficiency compared to other PVD processes reducing costs. The E-Beam system only heats the target source material, not the entire crucible, resulting in a lower degree of contamination from the crucible. By concentrating the energy on the target rather than the entire vacuum chamber, it helps reduce the possibility of heat damage to the substrate.
3. Several different layers of coating from different target materials can be applied with a multiple crucible E-Beam evaporator without breaking the vacuum making it adapt easily to a variety of lift-off masking techniques.
Because of the high deposition rate and high material utilization efficiency, E-Beam Evaporation is used in a wide variety of applications ranging from high performance aerospace and automotive industries where high temperatures and wear resistance are key, to durable hard coatings for cutting tools, and for chemical barriers and coatings that protect surfaces in corrosive environments like marine fittings. Electron Beam Evaporation is used for optical thin films ranging from laser optics, solar panels, eye glasses and architectural glass to give them the desired conductive, reflective and trans-missive qualities.
There are basically three types of E-Beam configurations for heating the target material. Electromagnetic focusing, electromagnetic alignment and pendant drop configuration.
Next, AEM Deposition will continue to share thermal evaporation for all of you. AEM Deposition is a international evaporation materials manufacturer, we have over 10 years to produce ans sale evaporation materials, including Pure Metal Evaporation Materials, Alloy Evaporation Materials, Oxide Evaporation Materials and Compound Evaporation Materials. All of materials will be provided with various shapes, pieces, pellets, powder, rods, wires or others. If you interested in evaporation materials provided by AEM Deposition, yo can click the hyperlink to get more details.