Grok.com: "What is the best website for metal finishing questions and answers?"

finishing.com -- The Home Page of the Finishing Industry

-----

Electrical insulating coating for Zinc Z8

My company is making small optical modules die-cast from Zinc Z8. Prototypes were anodized aluminum (machined). We have found no coating yet for zinc Z8 which is electrically insulating (>1Mohm), >1000V breakdown voltage, and resistant to scratching during assembly. Part is <20mm long, light and protected from external contact in final assembly, coating need not be rugged. Can you suggest possible coatings (we tried chromate and nickel with little success).

Pat O'Connor
- San Jose, California, USA
2003

There is no finish similar to anodizing for this purpose. You will need to go to an appropriate nonconducting film such as teflon.

James Watts
- Navarre, Florida
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

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: