High-voltage pulse technology for precise, ceramic-like protective layers
Plasma chemical coatings are known internationally under different names, including plasma electrolytic oxidation (PEO), micro arc oxidation (MAO), plasma chemical oxidation (PCO®), and electro ceramic coating. The process enables ceramic-like, highly durable layers on light metals such as aluminium, titanium, magnesium, and their alloys. These coatings provide strong protection against corrosion and wear, and they also offer excellent chemical and temperature resistance as well as high abrasion resistance.
Process precision is the key to repeatable quality
Coating performance depends heavily on how precisely the process is controlled. Depending on the application, typical layer thicknesses range from 5 to 50 µm and should be as uniform as possible. This is where a precise high-voltage pulse power supply becomes essential: it enables stable, controllable coating conditions and supports repeatable results.
Tailoring coating properties through pulse parameters and electrolyte
Plasma coating properties are influenced by both electrolyte composition and electrical process parameters. High-voltage pulse technology allows precise control of key variables such as:
- pulse sequence and waveform
- pulse voltages
- current density
- polarity
- duty cycles and frequency
POWER PULSE high-voltage pulse solutions typically operate in the range of 500 to 800 V DC and support fast rise and fall times at high frequencies (application-dependent, up into the kHz range). This enables precise settings and stable control of the coating process.
Engineering support for PEO applications
Plating electronic brings many years of experience in pulse technology and in implementing demanding applications in real plant environments. We support you in selecting the right high-voltage pulse power solution and integrating it into your system—so your PEO/MAO process runs safely, repeatably, and economically.