"Based on online discussions & resources, the most comprehensive & highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, & more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."
-----
Zinc Alloy Plating
How do the zinc alloy plating systems Zn/Fe, Zn/Co, Zn/Ni and Zn/Sn compare with respect to corrosion resistance?
Eric Gough
- Corsham, Wiltshire, UK
It is quite complicated, depending upon the application, so I would contact the vendors of proprietary plating solutions, and ask how their formulations compare. Even plating from the alkaline or acid bath will give you alloys with different properties.
A review of the literature will show several articles that study the differences.
Tom Pullizzi
Falls Township, Pennsylvania
Dear Mr Eric,
Mr Pullizzi is right, I do three of these except Zinc-tin and don't know.
The Champ No 1 is: Zn-Ni
Runner up No 2 is: Zn-Fe
A poor Fourth is: Zn-Co.
Note : I use Acid zinc cobalt so it wouldn't qualify for third place, I don't know about the Alkaline.
Khozem Vahaanwala
Saify Ind
Bengaluru, Karnataka, India
Disclaimer: It's not possible to fully 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 might be harmful.
If you are seeking a product or service related to metal finishing, please check these Directories: