Duplex Surface Modification of 304-L SS Substrates by an Electron-Beam Treatment and Subsequent Deposition of Diamond-like Carbon Coatings

Coatings

卷:12

Nina Dimcheva¹  Georgi Kotlarski²  Stefan Valkov²  Stanislava Rabadzhiyska²  Maria Ormanova²  Maria Shipochka³  Velichka Strijkova⁴  Peter Rafailov⁵ 

[1] Department of Physical Chemistry, Plovdiv University Paisii Hilendarski, 24 Tzar Asen Str., 4000 Plovdiv, Bulgaria;

[2] Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria;

[3] Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bld. 11., 1113 Sofia, Bulgaria;

[4] Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, 109 Acad. G. Bonchev Str., 1113 Sofia, Bulgaria;

[5] Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Blvd, 1784 Sofia, Bulgaria;

关键词: diamond-like carbon coating;    surface modification;    electron-beam treatment;    electron-beam physical vapor deposition;    surface topography;    corrosion properties;   

DOI  :  10.3390/coatings12030401

来源: DOAJ

【 摘 要 】

In this study, we present the results of the effect of duplex surface modification of 304-L stainless steel substrates by an electron-beam treatment (EBT) and subsequent deposition of diamond-like carbon coatings on the surface roughness and corrosion behavior. During the EBT process, the beam power was varied from 1000 to 1500 W. The successful deposition of the DLC coatings was confirmed by FTIR and Raman spectroscopy experiments. The results showed a presence of C–O, C=N, graphite-like sp², and mixed sp²-sp³ C–C bond vibrations. The surface topography was studied by atomic force microscopy. The rise in the beam power leads to a decrease in the surface roughness of the deposited DLC coatings. The studies on the corrosion resistance of the samples have been performed using three electrochemical techniques: open circuit potential (OCP), cyclic voltammetry (polarization measurements), and non-destructive electrochemical impedance spectroscopy (EIS). The measured corrosion potentials suggest that these samples are corrosion-resistant even in a medium, containing corrosive agents such as chloride ions. It can be concluded that the most corrosion-resistant specimen is DLC coating deposited on electron-beam-treated 304-L SS substrate by a beam power of 1500 W.

【 授权许可】

Unknown