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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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New finishes for magnesium alloys -- anodizing and chromating

Q. I am currently doing research on Mg alloys in watch making. I want to know the different finishes available. The finishes need to be decorative, corrosion resistance, hypo-allergic and have reasonable mechanical properties. Any comment on the subject is appreciated.

Doris Wong
- Hong Kong
1999

A. You can either anodize it or put a chrome conversion coating on a magnesium alloy. You can also paint after treating the surface with a chrome conversion coating.

S. Y. Yuen
- Hong Kong, China
1999

A. There are new ceramic oxidization coatings which produce extremely high hardness and corrosion resistant surfaces on Mg. This can be polished to produce a pleasing appearance (depending on alloy) and accept paint easily as well as certain dyes.

Trevor Amos
- Southampton, England, UK
1999

"Magnesium Finishing"
by Dow Chemical Co.
dow_magnesium

is sometimes available on
AbeBooks,
eBay, or
Amazon

... but if not, you can find libraries which have copies on WorldCat.org

(affil links)

A. Hi, Doris. We have a review of magnesium finishing on line here: "Finishing of Magnesium". Further, magnesium can be electroless nickel plated.

If you can possibly find it, try to get hold of the "Dow Handbook on Magnesium Finishing" . Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
March 6, 2009

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