Difficulty in electroetching of 1050 aluminum alloy

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SUMMARY

The forum discussion centers on the challenges of electroetching 1050 aluminum alloy using a solution of 5ml phosphoric acid and 95ml water at 1 to 10 volts. The user reported a complete failure after 6 minutes of etching. Suggestions from other participants included using sodium hydroxide (NaOH) as an alternative and checking the oxide layer's thickness and polarity during the process. The conversation emphasizes the importance of proper solution composition and electrical settings in achieving successful electroetching results.

PREREQUISITES
  • Understanding of electroetching processes
  • Familiarity with aluminum alloys, specifically 1050 aluminum
  • Knowledge of chemical solutions used in electroetching, such as phosphoric acid and sodium hydroxide
  • Basic principles of electrolysis and electrical polarity
NEXT STEPS
  • Research the effects of sodium hydroxide (NaOH) in electroetching aluminum
  • Learn about the properties of 1050 aluminum alloy and its behavior during electroetching
  • Investigate the impact of oxide layer thickness on electroetching efficiency
  • Explore best practices for setting voltage and polarity in electroetching applications
USEFUL FOR

This discussion is beneficial for metalworking enthusiasts, electrochemical engineers, and anyone involved in the electroetching process of aluminum alloys, particularly those seeking to improve their techniques and outcomes.

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Dear friends
I have tried to electroetch 1050 aluminum alloy by 5ml phosphoric acid + 95ml H2o under 1 to 10 volts. However, it was a complete failure even after etching for 6 min.

Please help me if you know how to overcome this problem.

Thank you very much
Best regards
 
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What does failure mean?
All you wish to do is electroetching aluminum?
Why not NaOH
Is the oxide layer thin? I usually get at least electrolysis and some etching with tap water. Are any bubbles coming out?
Are you sure you used the right polarity?

A few startup questions.
 
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