Thermal barrier coatings of Al2O3–ZrO2 were prepared by air plasma spraying on the surface of 20G steel. Phase constitution, microstructures and elemental distributions of the coatings were studied by X-ray diffraction, scanning electron microscope and electron probe X-ray microanalysis. The...

In this paper, as-sprayed HA coatings were remelted by CW laser. The morphologies and the development of microstructures were analyzed by electron probe microanalysis. The solidification mechanism of laser remelted bioactive HA coatings is usually determined by the parameters of the temperature...

The low bonding strength between plasma sprayed hydroxyapatite (HA) coatings and substrates is one of the problems, which should be solved. In this paper, the as-sprayed HA coatings were retreated by laser remelting. The microstructure and element analysis in coatings were studied by electron...

The oxidation behavior of the coatings at 1100°C in air was investigated using electron probe microanalyzer, scanning electron microscopy, and X-ray diffractometer. Compacted oxide scales, mainly consisting of oxides of Al and Y, were formed on the coating surface, and thus the oxidation...