Ion-beam treatment of the surface defined as a certain effect resulting from applying ion beams (of a certain character with defined energy and ions density) to the target object.
Ions of the working gas are generated within crossed electrical and magnetic fields and their acceleration and energy are resulting from the difference of potentials within anode-cathode. Ions resulting from the working gaz ionization together with drifting electrons within closed magnetic field create an anode layer. Devices comprise such physical principles are called anode layer accelerators.
Application:
Round anode layer accelerators applied in a variety of vacuum systems (as batch as in-line types) within different technological processes while working with substrates up to 250 mm, like: cleaning, polishing and activation of the surface, precise ion-beam etching, films deposition on the substrate, ion-beam assisting while film deposition. Preliminary ion-beam cleaning is the most effective when applying before the coating deposition in one vacuum cycle.
Main tasks:
- Cleaning and activation of the surface;
- Precise polishing;
- Deposition of functional thin films of high density: protective, dielectric, diamond-like, complicated layers compositions from variety of materials.
Technical data:
Parameters | Basic | Options |
Source type | accelerator with anode layer | |
Working pressure | 0,009 ÷ 0,15Pa | |
Target material | any | |
Aperture diameter | Ø25, 150, 200 | by request |
Target diameter | Ø50,100,150, 200 | by request |
Magnetic system | Permanent magnets NdFeB+2xNi | |
Gas distributor | Yes | |
Cooling | Indirect | Direct |
Anode voltage | 0,8 ÷ 2,5 kV | 0,8 ÷ 5 kV |
Mean ion energy | 0,35 ÷ 1,5keV | 0,35 ÷ 3keV |
Current density, mA/cm slit length | < 2,1mA/cm | < 4,2mA/cm |
Gas flow (depends on slit length) | 5…750 cm3/min | |
Mean time between maintenance (mtbm) | 120 h | |
Cooling | water | |
Cooling water temperature | 18...25 °C | |
Water pressure | 2..4 bar | |
Water flow | >0,7 l/min/kW | |
Working gas | Ar, O2 and other | |
Working gas purity | 99,99 % |