The authoritative public forum
  for Metal Finishing since 1989
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Anodize

I'm looking for a liquid that can be applied then rinsed or wiped off, to be baked to 150 C, later in the process. Is there such a liquid?

Bob N [surname deleted for privacy by Editor]
- Perrysburg, Ohio
2000

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Yes.... I mean no.... I mean.... What was the question again, Bob?

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2000

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errr....huh? Ditto to your answer, Ted..sorry, I couldn't resist.

Marc Green
anodizer - Boise, Idaho
2000

OKAY, OKAY, YOU JOKERS, the answer is "What are you trying to accomplish with this liquid? It is not anodize, it might be a chromate conversion coating, which can be applied to aluminum with a brush or a rag.

Baking to 150 °C might be a bit too high to preserve the corrosion protection properties of a conversion coating.

  
Tom Pullizzi
Falls Township, Pennsylvania
2000

Hey! Is there anyone who knows what chemical can make the aluminium surface bright and shining after black anodize ?

Ong Lip Khoon
- Malaysia
2006

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Hi, Ong. If you've seen bright and shiny parts like that, they were almost surely bright and shiny BEFORE anodizing, not made bright after it. The brightening chemical is a mix of nitric and phosphoric acid and is called aluminum bright dip, but often it's done after mechanical polishing. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007