-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 6996

Plating Magnesium AZ91D for corrosion resistance, EMI shielding and decorative


We are looking for ways and methods that are available in the industries to plate or coat Magnesium AZ91D for corrosion resistance, EMI shielding and decorative. Main application: microelectronics and mobile phone.

Chua Kok Siong
NTU - Singapore, Singapore


One cannot plate magnesium out of aqueous solutions. The oxidation potential of the magnesium is too large. Clean magnesium will react slowly with water (mag wheels and mag parts are actually alloyed). You can try a dipping process.

Anthony Xidis
- Minneapolis, Minnesota


AZ91D is used as diecast, so that has much micro pin hole during die casting process. The cast is observed as sponge structure by electron microscope. The porous structure is easy attacked by chemical in plating or aquatic phosphate treatment etc.

If you want to prevent the corrosion problems, should get sound structure. You can check by gravity measurement or by microstructure.

In my experience, the rolled sheet or extruded plate are better than diecast. For example, AZ31B or AM20 etc.

Simon KangHyung Kim
- Suwon, Kyungki, South Korea

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.