A hierarchical nanostructural coating of amorphous silicon nitride on polyetheretherketone with antibacterial activity and promoting responses of rBMSCs for orthopedic applications

A hierarchical nanostructural coating of amorphous SN on a PEEK surface was prepared by ICPECVD which exhibited excellent cytocompatibility and antibacterial activity.

Comparative Study on Nano-Structural and Traditional Al2O3-13TiO2 Air Plasma Sprayed Coatings and their Thermal Shock Performance

This paper reports a comparative study on characterization and thermal shock behavior of air plasma sprayed Al2O3-13wt.%TiO2 coatings using two kinds of raw materials, i.e. nanostructural and micro-structural (traditional) feedstock powders. The characterization, before and after thermal shock test, was carried out using micro-Vickers hardness tester, XRD and SEM. The thermal shock test was carried out using a water quenching method by employing cyclic heat treatment between ambient temperature and 650°C in air. The results showed that in spite of having denser structure, the nanostructural coating showed hardness a little lower than the traditional one at both conditions of before and after thermal shock tests. However, the nanostructural coating showed very good thermal shock behaviour.

Preparation and Characterization of Micro-Nanostructural Beads and the Super Hydrophobic Micro-Nanostructural Coating

Fly ash, as a raw materials,is used to prepare micro-nanostructural beads with the surface modified by using silane coupling agent. The coating of micro-nanostructural surface was prepared by using the modified micro-nanostructural beads and silicone rubber adhesive. Then the coating surface was dipped in liquid teflon (PTFE) for hydrophobic modification. Scanning Electronic Microscope (SEM) and JC2000C contact angle tester were used to character the coating surface performance. The results show that the average contact angle and rolling angle of the coating surface are measured as 152.9° and 3.4° respectively which means the prepared coating being of super-hydrophobicity.