Characteristics of electron beam evaporation coating
Electron beam evaporation coating machine is a kind of film manufacturing equipment commonly used in industry. Due to the characteristics of the evaporation coating machine, it plays a great role in the production of films. The generation of films is mainly generated by the heating of electron beam in the coating machine. 1, the advantages of electron beam heating evaporation coating the method of electron beam heating in the coating machine compared with the traditional method of resistance heating. Electron beam heating produces a higher flux density, which is favorable for evaporation of materials with high melting points, and can also improve the rate of evaporation to some extent. (2) evaporation coating machine in the work of the need to be vaporized raw materials into the copper crucible, so that the material can be guaranteed to avoid pollution, can produce a higher purity of the film. The e - beam evaporation of the kinetic energy of the particles is relatively large, so will be conducive to the film precision and binding force. 2, electron beam heating evaporation coating disadvantages the overall structure of the electron beam evaporation coating machine is more complex, the price compared with other coating equipment is relatively high. When the coating machine is working, if the density of the steam near the evaporation source is relatively high, it will make some interaction between the electron beam and the steam particles, will have an impact on the electron flux, make the electron flux lost or offset the orbit. At the same time, you may cause the excitation and ionization of the steam and residual gas, which affects the quality of the entire film.
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