Repozytorium publikacji - Politechnika Gdańska

Titanium and its alloys are the biomaterials most frequently used in medical engineering, especially as parts of orthopedic and dental implants. The surfaces of titanium and its alloys are usually modified to improve their biocompatibility and bioactivity, for example, in connection with the deposition of hydroxyapatite coatings. The objective of the present research was to elaborate the technology of electrophoretic deposition (EPD) of nanohydroxyapatite (nanoHAp) coatings decorated with silver nanoparticles (nanoAg) and to investigate the mechanical and chemical properties of these coatings as determined by EPD voltage and the presence of nanoAg. The deposition of nanoHAp was carried out at two voltage values, 15 and 30 V. The decoration of nanoHAp coatings with nanoAg was carried out using the EPD process at a voltage value of 60 V and a deposition time of 5 min. The thickness of the undecorated coatings was found to be 2.16 and 5.14 μm for applied EPD voltages of 15- and 30-V, respectively. The release rate of silver nanoparticles into an artificial saliva solution increased with exposure time and EPD voltage. The corrosion current, between 1 and 10 nA/cm2, was significantly higher for undecorated nanoHAp coatings and close to that of the substrate for decorated nanoHAp coatings. The hardness of the undecorated nanoHAp coatings obtained at 15 and 30 V of EPD voltage attained 0.2245 ± 0.036 and 0.0661 ± 0.008 GPa, respectively. Resistance to nanoscratching was higher for thicker coatings. The wettability angle was lower for coatings decorated with nanoAg.

Autorzy

• dr inż. Michał Bartmański link otwiera się w nowej karcie ,
• dr inż. Bartłomiej Cieślik link otwiera się w nowej karcie ,
• Joanna Głodowska link otwiera się w nowej karcie ,
• Pamela Kalka link otwiera się w nowej karcie ,
• dr inż. Łukasz Pawłowski link otwiera się w nowej karcie ,
• Maja Pieper link otwiera się w nowej karcie ,
• prof. dr hab. inż. Andrzej Zieliński link otwiera się w nowej karcie