Dataset for the paper "Biotribocorrosion of CoCr Surfaces Using Hyaluronic Acid functionalized with Graphene Oxide nanoadditive as hybrid lubricants"

[EN] This is the experimental dataset used in the paper “Biotribocorrosion of CoCr Surfaces Using Hyaluronic Acid functionalized with Graphene Oxide nanoadditive as hybrid lubricants", that include tribocorrosion and electrochemical impedance tests. Tribocorrosion tests were carried out in a pin-on-disk tribometer. The experiments were conducted under a normal load of 5 N, a rotational speed of 120 rpm, following a circular sliding path with a radius of 7 mm and covering a total sliding of 15,000 meters. The dataset includes the experimental results of the tribocorrosion behaviour of CoCr surfaces immersed in the next lubricant media: 0.3 wt% hyaluronic acid (CoCr_bola_CoCr_HA1 and 2); 0.4 wt.% graphene oxide (CoCr_bola_CoCr_GO1, -2 and -3); 0.3 wt.% HA + 0.008 wt.% GO (CoCr_bola_CoCrHA3OG2%-1 and -2): 0.3 wt.% HA + 0.016 wt.% GO (CoCr_bola_CoCrHA3OG4%-1, -2 and -3); 0.3 wt.% HA + 0.032 wt.% GO (CoCr_bola_CoCrHA3OG8%-1 and -2). Electrochemical impedance spectroscopy measurements of CoCr surfaces in 0.3 wt.% HA + 0.016 wt.% GO was carried out for 7 days. Impedance tests were performed in a three-electrode electrochemical cell with the modified CoCr surfaces acting as the working electrode, a Pt wire acting as counter electrode, and Ag/AgCl (3 M KCl) as a reference electrode. A Gamry potentiostat/galvanostat was used to generate a sinusoidal wave of 10 mV amplitude in the frequency range 100 kHz to 1 mHz, logarithmically spaced by 5 points/decade, which was applied at the corrosion potential Ecorr. This data set includes the results of the coefficient of friction and electrochemical impedance data obtained for CoCr surfaces immersed in the previously described lubricant media. COF files are composed of 6 columns: force, temperature, revolutions, COF, sliding and time. Nyquist impedance files are composed of 3 columns: frequency, real impedance (Z') and imaginary impedance (Z''). Bode impedance files are composed of 3 columns: frequency, Impedance modulus (Z) and phase angle (Phase). All files are in open extension such as .asc and are protected by a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.