Abstract
In this study, nanostructured Yb2SiO5 coatings were prepared by atmospheric plasma spraying (APS) using nanostructured Yb2SiO5 feedstocks. Conventional Yb2SiO5 coatings were selected for comparison. The microstructure and nanomechanical property of the nanostructured and conventional Yb2SiO5 coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nano-indentation. Results indicate that the surface of the nanostructured Yb2SiO5 coatings is uniform and denser than the conventional Yb2SiO5 coatings. In addition, Weibull distribution analysis shows that the molten state of the nanostructured Yb2SiO5 coatings present a mono-modal distribution, whereas the conventional Yb2SiO5 coatings show a bi-modal distribution, i.e. molten and unmelted zones. The nanostructured Yb2SiO5 coatings have a higher elastic modulus than the conventional Yb2SiO5 coatings (167.37077 ± 16.88070 GPa versus 153.72856 ± 19.69907 GPa), reflecting their high density.