RT Journal Article
T1 Comparison of 2D and 3D Plasma Electrolytic Oxidation(PEO)-Based Coating Porosity Data Obtained by X-rayTomography Rendering and a ClassicalMetallographic Approach
A1 Karlova, Polina
A1 Serdechnova, Maria
A1 Blawert, Carsten
A1 Lu, Xiaopeng
A1 Mohedano Sánchez, Marta
A1 Tolnai, Domonkos
A1 Zeller-Plumhoff, Berit
A1 Zheludkevich, Mikhail
AB In this work, the porosity of plasma electrolytic oxidation (PEO)-based coatings on Aland Mg-based substrates was studied by two imaging techniques—namely, SEM and computer microtomography. Two approaches for porosity determination were chosen; relatively simple and fast SEM surface and cross-sectional imaging was compared with X-ray micro computed tomography (microCT) rendering. Differences between 2D and 3D porosity were demonstrated and explained. A more compact PEO coating was found on the Al substrate, with a lower porosity compared to Mg substrates under the same processing parameters. Furthermore, huge pore clusters were detected with microCT. Overall, 2D surface porosity calculations did not show sufficient accuracy for them to become the recommended method for the exact evaluation of the porosity of PEO coatings; microCT is a more appropriate method for porosity evaluation compared to SEM imaging. Moreover, the advantage of 3D microCT images clearly lies in the detection of closed and open porosity, which are important for coating properties.
PB MDPI AG
SN 1996-1944
YR 2022
FD 2022
LK https://hdl.handle.net/20.500.14352/72214
UL https://hdl.handle.net/20.500.14352/72214
LA eng
NO PETRAIII (DESY, Hamburg, Germany)
DS Docta Complutense
RD 8 abr 2025