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It isn't. The anodize coating providing elctrolytic passivation is considered a dye, not a paint. It is permissable to perform fluorescent penetrant inspection on anodized pieces in the aerospace engine overhaul industry.

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Q: Why is the inspection of anodized aluminum impractical with penetrant?
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Related questions

Can aluminum be anodized with steel attached?

No, aluminum cannot be anodized with steel attached. Anodizing is a process that specifically applies to aluminum and its alloys. Steel cannot be anodized in the same way as aluminum, as it requires its own unique processes for surface treatment and coating.


Why can aluminum be anodized?

Aluminum can be anodized because it forms a natural oxide layer on its surface that can be enhanced through anodization. Anodization involves creating a thicker, more durable layer of oxide on the aluminum, which improves its corrosion resistance, appearance, and adhesion for paints and dyes.


Does aluminum stop infrared radiation from a laser?

I believe anodized aluminum does whereas plain aluminum does not


Is the Eiffel Tower made of anodized aluminum?

No. Iron.


Are boats made of non anodized aluminum?

yes and no


How do you care for a new anodized thin crust pizza pan?

Anodized aluminum pans just need washing. They don't rust.


Is anodized aluminum resistant to hydrochloric acid?

Anodized aluminum is generally resistant to hydrochloric acid due to the hard oxide layer created during the anodization process. However, prolonged exposure to concentrated hydrochloric acid may still damage the anodized layer and affect the aluminum underneath.


Does anodized aluminum cookware cost more than nonstick cookware?

Yes, anodized aluminum cookware does cost more than non stick cookware. Since there's less demand for it, the production costs are higher.


Is anodized aluminum magnetic?

Anodized aluminum itself is not magnetic because the anodization process forms a non-ferrous oxide layer on the surface. However, the base aluminum material can be magnetic depending on its alloy composition.


Will aluminum jewelry turn your skin green?

Copper is what is in jewelry that turns skin green after lengthily wear. If the aluminum is If the aluminum is anodized it won't corrode at all.


Where can one find more information about anodized aluminum cookware?

Sites with information about anodized aluminum cookware include calphalon, bedbathandbeyond, costco, and Wikipedia. In addition, consulting a local houseware store may also yield more information.


Is aluminum screening galvanized?

I think you mean anodized, and yes, it is. Galvanized means it's plated with zinc, which won't stick to aluminum.