Geli̇şmi̇ş Korozyon Di̇renci̇ İçi̇n Eloksalli Metali̇k İmplantlarin Elektroki̇myasal Davranişlarinin İncelenmesi̇

Abstract

A study about long-term corrosion behavior of anodized and non-anodized Ti6Al4V and MgAZ31B biomaterials was conducted under controlled conditions. By applying 20V DC potential, MgAZ31B alloys was anodized in phosphoric acid and potassium hydroxide while Ti6Al4V alloys was anodized in phosphoric acid and oxalic acid. Long-term experiments were carried out by immersing them in deionized (DI) water, 3% NaCl and phosphate-buffered saline (PBS) solutions. The corrosion rate and pattern were measured by electrochemical analysis. Also, as a result of anodization, the natural oxide layer was observed on the material surface, thus the corrosion rate is reduced and the life of the biomaterial has been improved.

PAN-based fiber-reinforced carbon-carbon composites for improved fire retardancy and thermal and electrical conductivities for harsh environments

“…Mechanical properties were determined using a universal MTS tensile test machine. [28][29][30][31] Results and discussion…”

Improved mechanical and fire-retardant properties of fiber-reinforced composites manufactured via modified resins and metallic thin films

“…Applying electrically conductive metallic films, such as titanium (Ti), copper (Cu), nickel (Ni), gold (Au), and silver (Ag), and their alloys on the surfaces of fiber-reinforced composites can significantly improve both their thermal and electrical conductivity properties. In order to not add much weight to the composite, micron-size Cu films with better corrosion resistivity can be produced easily and used for fire retardancy purposes for fiber-reinforced composites [15][16][17][18][19]. Recent studies of submicron and nanosized Cu, Al, Au, and Ag films showed that these selected metallic films used on fiber composites served almost similar protection purposes as that of thicker films [1].…”

“…However, it should be kept in mind that bonding between the metal film and the composite can be a concern if the proper process is not followed while applying these metal coatings on the composite surface [1,20]. Various methods of surface cleaning and treatment as well as anodization of metallic films can help to improve the bonding strength between the composite and metal surfaces as well as corrosion resistivity of the metallic films [16].…”