Enhancement of the tribological performance and surface wettability of Ti6Al4V biomedical alloy with boric/sulfuric acid anodic film

Abstract

Titanium and its alloys have many advantages such as acceptable biocompatibility and good corrosion resistance and these advantages make them a widely preferred biomaterial. However, it is also known that they have some disadvantages such as poor wear resistance and insufficient surface wettability. Therefore, to overcome this disadvantages, boric/sulfuric anodic films with different anodization time was formed on the surface of Ti6Al4V. The morphological and structural properties of anodic films were evaluated by XRD, XPS, SEM, Raman spectra, micro-hardness tester, 3D profilometer, and surface tension-meter. Also, the tribological behavior of them was analyzed by a pin-on-disk tribotester. The average coefficient of friction (CoF) of the untreated Ti6Al4V alloy is 0.37, while the CoF of boron containing TiO 2 anodic films is in the range of 0.04-0.15. Also, the anodic films reduced the wear rate by about 30% compared to the untreated Ti6Al4V. In addition to all these, it was observed that the anodic films changed the surface morphology. It was determined that the produced anodic films were in porous structures and with the increase of the applied anodizing time, the possibility of contacting the liquid with the surface increased.

Ceramic Conversion Treatment of Commercial Pure Titanium with a Pre-Deposited Vanadium Layer

“…Furthermore, the high contact angle of the titanium surface without V after CCT may be responsible for their relatively lower friction. Good wettability may benefit from improved lubrication [29] and enhance the tribological performance [30,31], which needs to be further explored. The oxide layer in the track was all cut through and delaminated partially, as seen in Figures 13b and 14b,d.…”

Analyzing the corrosion and tribocorrosion performances of monolayer TiO2 and bilayer TiO2-SiO2 coatings at different SBF temperatures

“…In the literature, oxide-based coatings are frequently used to improve the corrosion, tribocorrosion, and wear resistance of Cp-Ti material [17][18][19] . When the literature is examined, it is noticed that the TiO 2 structure is used in many protective coating studies [20][21][22]. Because TiO 2 has a biocompatible structure, it also improves wear and corrosion resistance [23].…”

Tribological Properties of the Fast Ceramic Conversion Treated Ti-6Al-2Sn-4Zr-2Mo Alloy with a Pre-Deposited Gold Layer

“…Anodic oxidation uses electrolytes (i.e., sulfuric acid, phosphoric acid, and others) to prepare oxide films on the surface of the anode titanium alloys. The electric field-driven anodic oxidation promotes the diffusion of metal ions and oxygen ions, resulting in enhanced adhesion and wear resistance [15,16]. However, the oxide film formed is often nonuniform and porous.…”