Manufacturing Processes and Logistics for Licensing
Delphi Silver Corrosion Reduction Process
Delphi's Silver Corrosion Reduction Process is a method of treating silver-containing surfaces to reduce corrosion.
Delphi's approach electrochemically forms an iodine-containing layer on a silver surface as a means of protecting the silver surface from sulfur. The surface is protected from wear by the thin surface layer that also functions as a solid lubricant, while preserving a low electrical resistance surface (vs. regular oxidation with no protective layer).
The Delphi Silver Corrosion Reduction Process can replace a stable but more costly fluid-based silver lubrication approach.
- Allows sustained performance of an electrical contact by providing reliable and stable interconnections between the electrical contacts of electromechanical devices
- Permits a suitably low resistance electrical contact to the underlying silver layer
- Iodine-containing layer on silver contact surfaces
- Improves the sulfur-tarnish resistance, friction and wear characteristics, and preserves the electrical stability vs. a bare silver surface
- Provides a frictional coefficient that is 5 times lower than a bare, clean silver surface
- Layer does not migrate away from the point of contact with time or during wear
- Surface resistance is low and electrically stable for conduction of electric current
- Increases lifetime of sliding switch cycles
- Improved fretting endurance
- Economical and efficient for mass-production
Silver surface after test
Using a protective iodine-containing coating on the surface of a silver-containing layer, Delphi's Silver Corrosion Reduction Process is particularly useful for the following applications:
- Electrical device contacts
- Other electrical connectors
It can be used in the following markets:
Manufacturing Processes & Logistics: Processes
7,575,665, Method of reducing corrosion of silver containing surfaces
Harrington; Charles R., Aukland; Neil R.