| Abstrakt: |
The bone and tissue of the human body can be treated, improved, or healed using many forms of biomaterials. Because of its biodegradable property, good biological and mechanical qualities, and widespread use in biomedical applications, magnesium (Mg) alloys are among the significant biomaterials. Additionally, magnesium has a lower density (1740 kg/m3) and modulus of elasticity (45 GPa), that is significantly more similar to human natural bone than some other higher modulus metallic implants like titanium (Ti), stainless steels (SS), and cobalt-chromium (Co-Cr) based alloys. Though, because of this family of biomaterials' higher electrochemical activity, they rapidly deteriorate and suffer higher corrosion in the physiological environment. This causes hydrogen (H2) gas to be produced, which raises the pH of the surrounding air. The rate of deterioration of Mg biomaterials must be decreased to fulfil therapeutic criteria. However, higher Mg corrosion resistance leads to a lower alkaline pH and reduced antibacterial action. Therefore, in addition to addressing the issue of Mg-based biomaterials' rapid breakdown, effective antibacterial characteristics are also required. The micro arc oxidation (MAO) also called as plasma electrolytic oxidation (PEO) surface modification technique can be utilized to modify the properties of Mg surface and its different alloys to increase their antibacterial activity while keeping their high levels of corrosion resistance. Antibacterial substances added to solutions during the MAO process significantly boost the coatings' antibacterial activity. In addition to producing hard, porous, biocompatible, corrosion resistant and wear-resistant coatings successfully, this technology may also be simply modified to incorporate antibacterial agents into the coatings' structure. It has been demonstrated that incorporation nano or micro sized particles to an electrolyte can change PEO coatings content and structure as well as provide potent antibacterial effects. Furthermore, PEO coatings that have undergone pre-or post-processing may provide better bacterial protection. We shall go into more depth about the antibacterial qualities of PEO coatings used on Mg and similar alloys in this paper. [ABSTRACT FROM AUTHOR] |
