An antibacterial and biocompatible multilayer biomedical coating capable of healing damages

A CS/CMC multilayer polyelectrolyte coating was developed, which features fast and efficient self-healing property, high antibacterial property, and excellent biocompatibility.

Progress on Hydrothermal Synthesis of Biomedical Coatings on Magnesium Alloy

Hydrothermal synthesis as a new coating technique has been developed to produce biomedical coating in Mg alloys in recent years. This paper summarized the process feature and corrosion resistance of hydrothermal synthesis coating in Mg alloys, and then reviewed the synthesis process, microstructure, corrosion behavior and corrosion mechanism of the Mg (OH)2 biomedical coatings. Finally, the current problems and research prospect of this technique in biomedical Mg alloys were discussed.

Study of Corrosion-Resistance on Biomedical Coating by Different Surface Treatments

The porous titanium alloy prepared by gel-casting methods was used as precursor and the composite coatings with hydroxyapatite HA/TiO2were prepared on the precursor which was treated by NaOH solution, H2O2+ NH3solution, HF+HNO3, PdCl2solution to improve the capability of coatings. The microstructure was examined by SEM and the corrosion behavior of the coating layers in the simulated body fluids (SBF) was evaluated by potentiodynamic polarization test and impedance plots. The results show that the corrosion resistance of samples using PdCl2treatment is superior to else others. The PdCl2processing provides the substrate surface an excellent oxide film, which plays a key role in the corrosion resistance of coating. The thickness of the coatings is about 60μm and the surface morphologies are more uniform than the others and have no crack.

Preparation of Biomedical Coating on Porous Titanium Alloy

The porous titanium alloys containing molybdenum elements have been prepared by gel-casting methods. The composite coatings with hydroxyapatite (HAP) and TiO2 were prepared on the precursor in this study. The microstructure was examined by scanning electron microscopy (SEM) and X-ray diffraction, and part of the coatings was examined by EDS to indicate the linear distribution of HAP and TiO2. The Solid content of gel-casting of water base can reacSubscript texth 35%，and porosity can reduce to 42% after sintering.