Abstract
7075 Al alloy was PEO-treated in a silicate based electrolyte containing 3 g l-1 potassium titanyl oxalate using unipolar and bipolar pulsed current waveforms. The coating formed by the bipolar waveform with the wider cathodic pulses showed volcano-like surface morphology with no evidence of large pores at the metal/coating interface. It revealed the highest corrosion performance due to the synergistic effect of TiO2 incorporation and structural/morphological features along with a better passivation behavior indicating no pitting susceptibility. For this coating, the tribocorrosion tests showed no potential drop during sliding under 1 N with the lowest volume loss of 0.022 mm3.
| Lingua originale | English |
|---|---|
| pagine (da-a) | 314-328 |
| Numero di pagine | 15 |
| Rivista | Corrosion Science |
| Volume | 143 |
| Stato di pubblicazione | Published - 2018 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)
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Di Franco, F., Santamaria, M., Hakimizad, A., Akbari, E., & Raeissi, K. (2018). Electrochemically-induced TiO2 incorporation for enhancing corrosion and tribocorrosion resistance of PEO coating on 7075 Al alloy. Corrosion Science, 143, 314-328.