No passwords, No popups, No cost
we earn from your eBay & Amazon purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
curated with aloha by
ted_yosem
Ted Mooney, P.E. RET
- Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

Student questions on electropolishing




Why metal surfaces can be polished in an electrolytic cell, based on electrochemical principle? (as reference to a copper polishing cell) And why is it possible to remove micro-elevations on a specimen surface selectively? What is the effects of voltage of a DC source, temperture and electrolyte movement on polishing quality?

Andy Li
student - Singapore
2004



Metal can be oxidized from metallic state to ionic state by the removal of electrons. Thus, is you make the copper anodic, it will start dissolving. The high points are closer to the cathode and represent a lower resistance path than the low points, so more current will flow to them and they will dissolve preferentially, thus smoothing the surface. For a discussion of DC sources, temperatures, electrolytes, and agitation you need a book like The Electroplating Engineering Handbook [on AbeBooks or eBay or Amazon affil links] .

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2004




(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:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"