Galvanic Corrosion Test
Galvanic Corrosion Test
(OP)
Hello All
Background:
The specification states that the Weld shall not be Anodic with respect to Base material, This statement appears as the acceptance criteria under Galvanic Corrosion Test of the Pipe Procurement specification.
Suppose the potential measured of the pipe base material is "- 0.5" and the potential of the weld is "-0.4" (I persume it is the potential that will be determined as the measure of Anodicity or Cathodicity), is the Weld Anodic with respect to Pipe.
Background:
The specification states that the Weld shall not be Anodic with respect to Base material, This statement appears as the acceptance criteria under Galvanic Corrosion Test of the Pipe Procurement specification.
Suppose the potential measured of the pipe base material is "- 0.5" and the potential of the weld is "-0.4" (I persume it is the potential that will be determined as the measure of Anodicity or Cathodicity), is the Weld Anodic with respect to Pipe.





RE: Galvanic Corrosion Test
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RE: Galvanic Corrosion Test
Using SCE electrode and Test Solution is Sea Water (With H2s Purge)
RE: Galvanic Corrosion Test
A standard saturated calumel electrode, not a big deal.
Then you have figure out how to set it all up.
Often you take the samples and mask them with epoxy, except ofor a controled size (1 sq cm)spot in the area of interest.
There is an ASTM for taking galvanic measurements, but I cant recall what it is.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Galvanic Corrosion Test
RE: Galvanic Corrosion Test
You can buy sample holders that use a gasket to expose a controled area. Of course you need flat samples.
Has your customer ever done this test themselves? Do they give resolution, precision limits?
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Galvanic Corrosion Test
RE: Galvanic Corrosion Test