Akademik Veri Yönetim Sistemi
CERAMICS INTERNATIONAL, cilt.49, ss.25516-25529, 2023 (SCI-Expanded)
In this study, stainless steel material was coated with Ni–B alloy-based, TiC particle reinforced composite film
using electrochemical deposition method. The properties of the obtained Ni–B/TiC nanocomposite coatings were
investigated in terms of the effect of trimethylamine borane (TMAB) bath concentration, which is a boron source.
In addition, the data of pure Ni, Ni–B alloy and stainless steel are presented together for comparison. According
to the cyclic voltammogram (CV) analysis, it is seen that TMAB contributes to increasing the deposition rate. In
the crystal structure analysis, the effect of TMAB was weaker at low TiC bath concentrations, while the effect of
TMAB was more dominant at high TiC bath contents. The crystal grain size values of nanocomposite coatings
vary between 5.8 and 16.8 nm, and these values decrease up to 86% when compared to the crystal grain size of
the pure Ni coating. Although the increase in TMAB initially causes an increase in the microhardness of nanocomposite
coatings, when the TMAB value was further increased, it was observed that the microhardness
decreased even more compared to the previous initial value. The highest hardness value was obtained in the
sample produced at 5 g/l TiC and 6 g/l TMAB bath contents, and this value was 817 HV. Compared to this value,
it was observed that the hardness of pure Ni was 65% lower. It was observed that TMAB did not have significant
effect on the coating morphology, but the increase in TMAB caused an increase B content and a decrease in the
TiC content in the nanocomposite coating. Furthermore, it was revealed that the increase in TMAB bath concentration
caused an improvement on corrosion resistance. The corrosion current of the composite sample with
9 g/l TMAB concentration, which showed the best corrosion performance, decreased by 85% compared to pure
nickel.