Electroless Ni–B Coating of Pure Titanium Surface for Enhanced Tribocorrosion Performance in Artificial Saliva and Antibacterial Activity

Abstract

A B S T R A C TIn the present study, the surface of commercial pure (Grade 2) titanium was coated with electroless Ni-B. The surface morphology, microstructure and phase identification were analysed by X-Ray Diffraction (XRD) and Field Emission Gun Scanning Electron Microscope (FEG-SEM) equipped with Energy Dispersive X-ray Spectroscopy (EDS). The tribocorrosion performance in a laboratory simulated artificial saliva was investigated using a reciprocating ballon-plate tribometer coupled to an electrochemical cell. The antibacterial property of the electroless Ni-B film coated on pure titanium was basically investigated. From this study, it may be concluded that this electroless Ni-B coating process cannot only improve the hardness and tribocorrosion performance of the pure titanium, but can also provide antimicrobial activity.

Ticari Saflıkta Titanyumun Akımsız Ni-B Kaplaması ile Yüzey Özelliklerinin Geliştirilmesi

“…Finally it can be concluded that a hard and self-lubricating Ni-B coating also led to a reduction in the actual contact area resulting lower wear rate and friction coefficient ( Table 1). The cauliflower like surface morphology and nodular growth have been confirmed in several research works and the present observations corroborate well with them [17][18][19][20][21][22][23].…”

“…Conversely, at low SEM magnifications a smoother surface was observed in the wear track for the coating (Figure 5 c). At high magnification ( Figure 5 d), it is possible to observe that flattening occurred for some nodules while others remained almost undamaged, as reported by previous studies [18,21]. The flattening areas revealed the nodular grain growth of the Ni-B coating.…”

“…Since the boron content in the Ni-B coating without heat treatment was higher than 5 wt. % [18], an amorphous structure was achieved. Similar results have been reported by Watanabe et al [22] and Vitry et al [23].…”

“…% HF for 1 minute at room temperature and rinsing with deionized water before direct immersion in the plating bath for 60 minutes. More details on the bath composition have been given by Mindivan et.al [18]. The cross-section of the coating was included in a resin and polished by metallographic procedures.…”

Tribological Properties and Microstructure of Electroless Nickel Coatings Reinforced With Nanoparticles

“…Nickel is a preferred metal in this method for producing coatings. Nickel coatings have excellent corrosion and wear resistance and high microhardness [1]. The necessity for the materials surface properties improvement launched the idea of the various second phase particles incorporation in the electroless nickel coatings in the 1960s [2] and led to the development of electroless nickel composite coatings.…”