No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

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

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

  The authoritative public forum
  for Metal Finishing since 1989

-----

Coating with Al a beryllium mirror covered with a thin 125microns optical layer of nickel

2006

We have to recoate a Berrylium mirror that is covered with a thin layer of nickel(125microns)
Our problems are the followings;
-first remove AL coating without removing Nickel(solutions concentration,duration of washing0)
-temperature of coating to avoid stress in Beryllium
- interference of nickel with magnetron field

DURAND Yves
ESO (European southern Observatory) - Paranal, Antofagasta, Chile

Do you want to remove the aluminum only or is the nickel also damaged? Is the nickel conventional or electroless? Aluminum can be stripped by a caustic soda ⇦liquid caustic soda in bulk on Amazon [affil link] solution at room temperature without damage to nickel. Nickel requires nitric acid or other special chemicals to strip and beryllium could be attacked. Maybe you would like to contact CIO (Centro de Investigaciones en Optica) a non-profit organization at Leòn, Guanajuato, Mexico. Dr. Luis Alvarez is researching about nickel plating for tooling and lenses.

Guillermo Marrufo
Monterrey, NL, Mexico
2006

(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: