In vitro Bioactivity, Bio-Corrosion Resistance and Antibacterial Property of Laser Cladded HA Coatings with Different Content of ZnO on Ti-6Al-4V Substrate
AUTOR(ES)
Hou, Baoping
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
05/09/2019
RESUMO
HA/ZnO coatings with varying content of ZnO were fabricated on Ti-6Al-4V substrate to enhance its bioactivity and antibacterial ability. The main phases are identified as CaTiO3, Ca3(PO4)2, ZnTiO3 and CaO. The coatings with higher ZnO content presented smaller grain size, resulting in a higher surface free energy and better wettability. Consequently, the mineralization of the ZnO/HA coatings, especially for the higher ZnO content samples were improved, indicating better enhanced in vitro bioactivity. The ZnO-HA coated Ti-6Al-4V presented better corrosion resistance than bare Ti-6Al-4V substrate. Furthermore, better corrosion resistance was obtained by increasing ZnO content in the precursor. The antimicrobial ratio of all coatings was approximately 100%, indicating the ZnO doped HA coatings presented excellent antibacterial ability.
Documentos Relacionados
- Radiographic inspection of porosity in Ti-6Al-4V laser-welded joints
- Controlled Pre-Corrosion Attack and Ultrasonic Fatigue Endurance of Titanium Alloy Ti-6Al-4V
- Surface Finishes for Ti-6Al-4V Alloy Produced by Direct Metal Laser Sintering
- Effects of plasma immersion ion implantation (PIII) of nitrogen on hardness, composition and corrosion resistance of Ti-6Al-4V alloy
- Three-dimensional characterization of pores in Ti-6Al-4V alloy