Jul 19, 2002 #1 CdotS Materials Jan 24, 2002 79 What is the best solution (acid or otherwise) to remove copper deposits a mild steel without affecting the substrate underneath?
What is the best solution (acid or otherwise) to remove copper deposits a mild steel without affecting the substrate underneath?
Jul 22, 2002 #2 bilge Materials Mar 14, 2001 59 An interesting problem because it is generally recognized that copper is much more corrosion resistant than iron. One possibility might be to use a nitric acid solution sufficiently strong to passivate the iron but attack the copper. Other possibilities: hydrocyanic acid (ugh!) hot isopropyl acid metallic mercury (probably your best bet). Upvote 0 Downvote
An interesting problem because it is generally recognized that copper is much more corrosion resistant than iron. One possibility might be to use a nitric acid solution sufficiently strong to passivate the iron but attack the copper. Other possibilities: hydrocyanic acid (ugh!) hot isopropyl acid metallic mercury (probably your best bet).
Jul 23, 2002 1 #3 rustbuster1 Materials May 30, 2001 128 Copper is soluble in ammonia solutions and carbon steel is not. I would expect a 10- 15 % solution of ammonium hydroxide in water at about 70C to give reasonbly good copper removal efficiency. Let us know what you decide. Upvote 0 Downvote
Copper is soluble in ammonia solutions and carbon steel is not. I would expect a 10- 15 % solution of ammonium hydroxide in water at about 70C to give reasonbly good copper removal efficiency. Let us know what you decide.
Aug 14, 2002 #4 sciguyjim Chemical Jun 12, 2002 155 Ferric chloride is used to etch copper from circuit boards but I have no idea how it will affect the steel. Upvote 0 Downvote
Ferric chloride is used to etch copper from circuit boards but I have no idea how it will affect the steel.
Aug 15, 2002 #5 tblaser Chemical Jun 1, 2001 23 Ferric Chloride is nasty stuff. It will attack most metals including Cu and Fe at a large range of concentrations. Tim Upvote 0 Downvote
Ferric Chloride is nasty stuff. It will attack most metals including Cu and Fe at a large range of concentrations. Tim
Aug 18, 2002 #6 vj436 Petroleum Aug 13, 2002 3 (Vijay Cor Eng) Etch blast the surface with fine garnet you can remove the copper as well as polish the surface. Upvote 0 Downvote
(Vijay Cor Eng) Etch blast the surface with fine garnet you can remove the copper as well as polish the surface.
