1. Resistance evaporation source evaporation plating

Heating: the high melting point metal is made into a proper shape of evaporation source,the current passes through it and is directly heated.

Advantages: simple structure, cheap cost, reliable use

Disadvantages: limited maximum temperature and shorter heater life

Applied filed: melting point is not too high, especially for the mass production which is not of a high requirements .

 2. Electron beam evaporation source evaporation

The evaporating material is placed in a cold water clamp pot and heated by electron beam

 Advantages: higher energy density, faster evaporation of high melting point materials, higher purity of film, high thermal efficiency.

Classification: ring gun, straight gun, e-gun and hollow cathode gun

Applied filed: material of high melting point and high purity