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Influence of dielectric barrier plasma treatment of ZnMgAl alloy‐coated steel on the adsorption of organophosphonic acid monolayers
Author(s) -
Knust Steffen,
Kuhlmann Andreas,
Orive Alejandro G.,
Arcos Teresa,
Grundmeier Guido
Publication year - 2020
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6782
Subject(s) - monolayer , x ray photoelectron spectroscopy , dielectric barrier discharge , adsorption , alloy , cyclic voltammetry , oxide , materials science , dielectric , dielectric spectroscopy , chemical engineering , layer (electronics) , electrochemistry , analytical chemistry (journal) , chemistry , electrode , nanotechnology , composite material , metallurgy , organic chemistry , optoelectronics , engineering
The adsorption of octadecyl phosphonic acid (ODPA) on oxide‐covered surfaces of ZnMgAl alloy coatings is described as a function of a dielectric barrier discharge (DBD) pretreatment step. The ODPA monolayer formation enables the investigation of the influence of the DBD treatment on the resulting interfacial bond formation and surface coverage. Surface characterisation by means of surface spectroscopy (PM‐IRRAS, XPS) and surface electrochemistry (cyclic voltammetry) showed that the DBD pretreatment with Ar, Ar/O 2 and Ar/H 2 O gas mixtures leads to improved barrier properties of the adsorbed ODPA monolayer. Moreover, during ODPA monolayer formation from ethanolic solution, a partial etching of the surface oxide layer occurs.