Author: Robby
Micro Arc Oxidation (MAO):
In the electrolyte solution (generally weak alkaline solution) apply high voltage to generate ceramicized surface film layer of the process, the process is a physical discharge and electrochemical oxidation synergistic effect of the results.
Process flow: pretreatment → hot water washing → MAO → drying
Technical characteristics:
Advantages:
1, ceramic texture, dull appearance, no high-gloss products, delicate feel, anti-fingerprint;
2、Wide range of substrates: Al, Ti, Zn, Zr, Mg, Nb, and their alloys, etc.;
3、Simple pre-treatment, excellent corrosion and weather resistance, good heat dissipation performance.
Disadvantages:
Currently the color is limited, only black, gray and other more mature, bright colors are difficult to achieve; cost is mainly affected by high power consumption, is one of the highest cost in surface treatment.