Hello, I am working on AAO fabrication on 1050 Aluminum sheet(thickness= 100 um)right now.
I had tried several sets of method through paper research including:
10°C, 40V, 0.3M oxalic acid,
10°C, 25V, 0.3M sulfuric acid,
25°C, 75V, 0.3M oxalic acid,
but all of the above methods only could last up to 30 min then the current dropped to zero, not reported 24 hours.
All samples were cleaned by base and acid bath, then electropolished.
I am wondering about anything could go wrong through the process that made the current fall to zero so rapidly ?
I think there have two main reasons that you should take into considerations:
1/you need to be sure whether the electrical connection of your specimens with the working electrode is good or not. If not, there will be no current flows during processing. I recommend you to connect your Al specimens with copper wire, mounted that part, and leave only one face interacting with the electroyte during anodizing.
2/it is also important to checkup your power supply. Some mistakes during setting up the commands or the limitation of max. current/voltage of the power supply can lead to the sudden stop of current flowing.
Good luck!
- Badges
- Science method
- Similar topics
- Mathematics
- Statistics
- Statistical Techniques
- Structural Equation Modeling