**4. Conclusions**

It was found that C125/1173 coating is the most resistant to corrosion in 5 wt.% NaCl solution of all the coatings tested. This is evidenced by the highest values of the corrosion potential, average contact potential difference and polarization resistance as well as the lowest value of the corrosion current density. The reason for this is the highest tungsten content in C125/1173 and the smallest surface area of this coating. Analysis of contact potential difference distribution shows also that the C125/1173 coating is characterized by the most homogeneous surface of all the coatings tested.

**Author Contributions:** Conceptualization, M.P. and J.K.; Methodology, M.P., J.K. and A.S.S.; Investigation, M.P. and J.K.; Resources, M.P. and J.K.; Formal Analysis, M.P., J.K. and A.S.S.; Writing—Original Draft Preparation, M.P., J.K. and A.S.S.; Data Curation, M.P., J.K., Z.W. and A.S.; writing—review and editing, Z.W., B.K. and A.S.; visualization, Z.W. and A.S.; All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The authors declare no conflict of interest.
