Sensors & Electronics
Electronics & Systems
Electrospark Deposition (ESD) Process Description (379a)
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- An electrode made of the material to be coated is brought very close to the substrate.
- Low power, short electrical pulses are applied between the electrode and the substrate causing an electrical arc between the electrode and the substrate.
- The low power electrical arc melts a small region of the electrode tip and the substrate.
- The molten materials mix and quickly quench.
- Repetitive, low duty cycle pulsing during electrode movement deposits coating with minimal thermal effects.
- Subsequent passes of the electrode over the surface build layer thickness and produce an exterior surface made of electrode material.
