Abstract:

BACKGROUND: Electrolyte, electronic parameters and time are three main factors in a micro-arc oxidation experiment, influencing the overall implant properties.
OBJECTIVE: To observe the effect of micro-arc oxidation time on the morphology, structure and composition of implant coating.
METHODS: The oxidation coating was prepared on titanium surface by using micro-arc oxidation technique in aqueous electrolyte solution containing calcium acetate monohydrate and sodium phosphate monobasic dihydrate. By changing the micro-arc oxidation time, microstructure changes were detected on the surface of titanium.
RESULTS AND CONCLUSION: The coatings were rough and porous. The longer oxidation time, the thicker coating, the larger diameter of porous, but the fewer porous numbers. As the treatment time increased, the surface roughness of micro-arc oxidation specimens increased, meanwhile the content and proportion of elements Ca and P was increased in the coatings. Therefore, the treatment time is an important factor in micro-arc oxidation technology, especially for the microstructure on the coating surface. By controlling oxidation time in a certain value, the ideal oxidation coatings can be acquired easily in the future, with good biological properties.