Morphology and thermal conductivity of yttria-stabilized zirconia coatings

Column Formation in Suspension Plasma-Sprayed Coatings and Resultant Thermal Properties

“…Typical deposition conditions result in these crystals growing primarily normal to the substrate surface, which is located directly above the flux emitted by the vaporized feedstock (Ref 8,9). The resulting columnar grains, which tend to extend from the substrate to the coating top surface, usually have diameters on the order of 10 lm (Ref 6, 7).…”

Phase evolution, interdiffusion and failure of La2(Zr0.7Ce0.3)2O7/YSZ thermal barrier coatings prepared by electron beam–physical vapor deposition

“…From Fig. 1b, it is clear to find that the column tips have a well-defined 4-sided pyramidal shape of fluorite derivative structures and are similar to those seen in 7YSZ and other zirconates [24][25][26]. The pyramidal diameters are measured to be approximately 0.5-0.8 µm, which is much smaller than those of EB-PVD YSZ coating.…”

Yttria-stabilized zirconia thick coatings deposited from aqueous solution in a low pressure plasma reactor

“…With regard to YSZ, if deposition techniques such as Electron Beam Physical Vapor Deposition (EBPVD) [10] and Air Plasma Spraying (APS) [11] are currently used on an industrial level, other techniques are also being investigated: Sol-gel [12], Plasma Enhanced Chemical Vapor Deposition (PECVD) [13] or Solution Plasma Spray (SPS) [14]. Some of the characteristics of these deposition techniques are summarized in Table 1.…”