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Coating to protect aluminum from 150 °C ammonia hydroxide (NH4OH)?

I am looking for coating to protect aluminum part from ammonia [on eBay or Amazon] hydroxide (NH4OH) at 150 °C,
Thank you,

Louis Legault
Product designer - Lavaltrie, PQ, CANADA
2007

That's a rather risky application. No matter how resistant the coating is, if it fails, severe or even catastrophic damage may occur to the substrate. That said, electroless nickel (EN) or better, a multilayer of electronickel and EN may give acceptable life. Absence of pores, cracks and other discontinuities together with a safe thickness are crucial.

Guillermo Marrufo
Monterrey, NL, Mexico
2007

I agree with Guillermo that to use an aluminum substrate for a component that will be exposed to a material known to be devastating to aluminum is a big problem. Please think about whether there is a possibility of making it from another material.

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

Have you considered coating your aluminium with another material using a cold spray process?

Alex Cameron
- Windsor, Ontario
2007

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