“Multilayer thermal barrier coating (TBC) architectures utilizing rare earth doped YSZ and rare earth pyrochlores”

Thermal conductivity and thermal cyclic fatigue of multilayered Gd2Zr2O7/YSZ thermal barrier coatings processed by suspension plasma spray

“…Pyrochlores are promising TBC topcoat candidates which can fulfill these requirements at higher temperatures [14][15][16][17][18][19]. Among the pyrochlores, gadolinium zirconate (Gd 2 Zr 2 O 7 ) is an interesting choice as lanthanum zirconate is difficult to process due to the tendency of La 2 O 3 to evaporate and result in loss of desired stoichiometry [20][21][22].…”

Effects of Processing Parameters on the Deposition of Yttria Partially Stabilized Zirconia Coating During Suspension Plasma Spray

“…[1][2][3][4][5][6][7] As YSZ is still the most important TBC material, strong efforts have been made in the past decade to further decrease its thermal conductivity and improve its phase stability during service at high temperature through doping and co-doping some special metal ions. 8,9 On the other hand, new processes such as plasma spray-physical vapor deposition, 10,11 solution precursor plasma spray, 12,13 and suspension plasma spray (SPS) have been developed to produce YSZ TBCs with the columnar or highly segmented microstructure, which can result in improved strain tolerance and durability at a reduced cost as compared to the EB-PVD process. [14][15][16][17] During the past decade, SPS as an emerging process has been intensively investigated for multifunctional coatings preparations.…”

Thermal conductivity and erosion durability of composite two-phase air plasma sprayed thermal barrier coatings

“…The TBC literature has investigated a variety of new TBC materials [2][3][4][5][6][7][8][9][10][11] including aluminates, perovskites, rare earth (RE) modified "co-doped" zirconia and the rare earth pyrochlores, as well as microstructural design architecture advancements [12][13][14][15][16]. The majority of recent research has focused on the rare earth modified zirconias and rare earth pyrochlores.…”