TY  - JOUR
AU  - Wei, Daqing
AU  - Du, Qing
AU  - Petrov, Yuri V.
AU  - Wang, Qingyu
AU  - Cheng, Su
AU  - Wang, Yaming
TI  - Improving osseointegration and antibacterial ability of Nb-doped micro arc oxidized coating with rod-like hydroxyapatite crystals on titanium surface
JO  - Microstructures
PY  - 2026
VL  - 6
IS  - 5
SP  - 
EP  - 20260119
SN  - ISSN 2770-2995 (Online)
AB  - <p>A niobium (Nb)-doped micro arc oxidized coating (MAO) was fabricated on a titanium substrate, and microwave hydrothermal (MH) post-treatment was applied to regulate the microstructure of the coating, aiming to enhance bone-implant osseointegration and antibacterial performance. The experimental results showed that the as-prepared MAO coating was composed of nanocrystalline TiO<sub>2</sub> and a large amount of amorphous phase containing oxygen, Nb, calcium, phosphorus, and other bioactive elements. After MH treatment, short rod-like hydroxyapatite (HA) crystals were uniformly formed on the porous surface of the Nb-doped MAO coating, resulting in a well-ordered crystalline structure with tight interfacial bonding between the HA crystals and the MAO coating. The incorporation of Nb and MH post-treatment synergistically optimized the surface microtopography and chemical composition of the MAO coating, which markedly enhanced <i>in vitro</i> bioactivity, <i>in vivo</i> osseointegration, and antibacterial properties.</p>
KW  - Micro arc oxidation
KW  - Nb element
KW  - microwave hydrothermal treatment
KW  - osseointegration
KW  - antibacterial ability
DO  - 10.20517/microstructures.2025.161
UR  - https://dx.doi.org/10.20517/microstructures.2025.161