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Electroplating. By: Steph Magill. Definition. Electroplating- The process of coating an electrically conducting surface with a thin layer (seldom more than 0.001 in [0.025 mm] thick) of metal by electrolytic deposition . . Uses.

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by steph magill

Electroplating

By: Steph Magill

definition
Definition
  • Electroplating- The process of coating an electrically conducting surface with a thin layer (seldom more than 0.001 in [0.025 mm] thick) of metal by electrolytic deposition.
slide3
Uses
  • One use for electroplating is covering zinc with copper in making coinage.
  • To Protect steel or other metals from rusting. Fore example metal bumpers on trucks.
  • To Make cans which are made from steel electroplated with tin. Which is good for foods.
how is electroplating related
How is Electroplating Related?
  • The process of electroplating causes redox reactions. We talked about redox reactions in class earlier. Which is an oxidation – reduction reaction.
  • Cations and Anions also deal with electroplating because cations of most metallic substances can be reduced, this fact is exploited in electroplating.
  • We learned about oxidation and reduction. This relates to electroplating because in the electroplating process oxidation is called Anode and reduction is called Cathode.
example
Example
  • This is a metallic object that needs to be a plate with a metal. First it fills a cell with a solution of a salt of the metal to be plated. Most of the time the salt (nickel chloride in the example) is simply dissolved in water and a little acid.
example1
Example

An example of a gold-plating cell.

example2
Example

The spoon is being reduced and is attracting the oxidized Ag+ ions which plates the spoon

in Silver atoms.

review questions
Review Questions
  • Name one use for electroplating.
  • What is oxidation and reduction called in electroplating?
internet cites
Internet Cites
  • http://www.finishing.com/faqs/howworks.html (picture)
  • http://wiki.answers.com/Q/Name_the_uses_for_electroplating (uses)
  • http://www.bookrags.com/research/electroplating-woc/ (definition)
  • www.images.google.com (picture)
  • www.images.google.com (picture)