In this work, YSZ coatings were deposited on air-cooled substrates by atmospheric plasma spraying. High-resolution transmission electron microscopy (HR-TEM) was used to examine local microstructure near the interface of bonded splats. The coatings mainly consist of typical columnar grain microstructure with metastable tetragonal phase. At the bonded zones, the top surfaces of previously deposited splats act as heterogeneous nucleation sites for the next splat. The examinations also revealed large columnar grains perpendicular to the bonded interface along with high defect density.

This content is only available as a PDF.
You do not currently have access to this content.