20.500.12556/RUL-136688 Electrochemical behaviour of Ti and Ti-6Al-4V alloy in phosphate buffered saline solution The electrochemical behavior of commercially pure titanium (CP Ti) and Ti-6Al-4V (Grade 5) alloy in phosphate buffered saline solution (PBS, pH = 7.4) at 37 °C (i.e., in simulated physiological solution in the human body) was examined using open circuit potential measurements, linear and potentiodynamic polarization and electrochemical impedance spectroscopy methods. After the impedance measurements and after potentiodynamic polarization measurements, the surface of the samples was investigated by scanning electron microscopy, while the elemental composition of oxide film on the surface of each sample was determined by EDS analysis. The electrochemical and corrosion behavior of CP Ti and Ti-6Al-4V alloys is due to forming a two-layer model of surface oxide film, consisting of a thin barrier-type inner layer and a porous outer layer. The inner barrier layer mainly prevents corrosion of CP Ti and Ti-6Al-4V alloy, whose thickness and resistance increase sharply in the first few days of exposure to PBS solution. With longer exposure times to the PBS solution, the structure of the barrier layer subsequently settles, and its resistance increases further. Compared to Ti-6Al-4V alloy, CP Ti shows greater corrosion stability. titanium Ti-6Al-4V alloy oxide film phosphate buffer solution corrosion true false true Angleški jezik Ni določen Članek v reviji 2022-05-16 09:55:03 2022-05-16 09:55:04 2022-09-15 04:14:11 0000-00-00 00:00:00 2021 0 0 15 str. iss. 24, art. 7495 Vol. 14 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 669 1996-1944 10.3390/ma14247495 89659395 materials-14-07495-v2.pdf materials-14-07495-v2.pdf 1 337BA4B526B4072F05B80F059114DBC6 20fe97d37a5cd8f8defcf7343457a2e8ee5818fd58b0bf5f2a9bb64033786954 b170fb06-d4ed-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156425 https://www.mdpi.com/1996-1944/14/24/7495 0 75346445-d4ed-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156424 Naravoslovnotehniška fakulteta 0 0 0