Akımlı ve Akımsız Yöntemlerle Üretilen Ni-P-CNF Kaplamaların Sertlik ve Korozyon Açısından Kıyaslanması

Abstract

Ni-P and Ni-P-CNF (carbon nanofiber) coatings produced by electrodeposition and electroless methods were compared in terms of hardness and corrosion properties in this study. Electrolytic (with and without current) coatings, which have been very popular in recent years, have many advantages in themselves. Many researchers have benefited from these advantages and created a wealth of literature. Coating studies with CNF are limited. CNF reinforced to coatings provides an increase in corrosion resistance. In the study, this increase is shown by giving the corrosion rate values. The corrosion rate of the coatings obtained by adding CNF was found to be 5.34x10-3mpy in the Ni-P-CNF sample coated with the electroless method. In electrodeposition coating, this value increased slightly to 15.79x10-3. The corrosion resistance of the coatings produced by the electroless coating method is higher. In order to better explain the effect of CNF, the alloy Ni-P coatings are compared. The results revealed the positive effect of CNF. In the study, the hardness values were also compared by taking Vickers microhardness. CNF showed a negative effect in hardness studies. Hardness values were lower in the coatings with CNF added (521Hv in electroless – 572Hv in electrodeposition). The coatings were also supported by X-ray diffractometry (XRD), Scanning electron microscopy (SEM) and energy distribution spectrometry (EDS) analyzes.