I was doing an electrochemical test (LPR) and Titanium Grade 5 produced by AM respassivated oxide layer faster than the specimen produced with traditional manufacturing under identical experimental conditions. I am wondering if this can be explained with 'porosity' and being exposed to more 'surface area' as a result?
Regardless of the the porosity level, will the SLM sample be air tight? Only then would my guess here be wrong. I am assuming that the layers below get exposed to oxygen as well which is why I see the plateau (a flatter curve) for SLMed specimen.
I am trying to find a reason for the slightly better performance of the same material from a corrosion point of view when submerged in a specific liquid.