Preparation and characterization of La2Zr2O7 coating with the addition of Y2O3 by EB-PVD

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]. Gadolinium zirconate (GZ) has excellent phase stability and lower bulk thermal conductivity than YSZ.…”

Cyclic oxidation and diffusion barrier behaviors of oxides dispersed NiCoCrAlY coatings

“…More recently, extensive efforts have been made to improve the operation temperature and service life time of TBC systems for further improvement in engine's performance. Novel ceramic candidates, such as La 2 Zr 2 O 7 with pyrochlore structure [3,4] and La 2 Ce 2 O 7 with fluorite structure have been investigated [5]. Also, new processing technologies, such as electrospark deposition, have been used for depositing MCrAlY coatings with high density and good homogeneity [6,7].…”

Thermal and mechanical properties of sintered bodies and EB-PVD layers of Y2O3 added Gd2Zr2O7 ceramics for thermal barrier coatings

“…It is reported that zirconate ceramic offers the advantage of having no phase transition during thermal aging and can maintain lower thermal conductivity than YSZ. The Electron Beam Physical Vapor Deposition (EB-PVD) process has been developed to improve the durability of thermal barrier coatings (TBCs) because this process can be used to improve the bonding strength and strain tolerance in place of air plasma TBCs [2,6,[11][12][13]. The process is known to be reliable and strain-tolerant because it can produce TBCs with a unique columnar microstructure at high deposition rates, and can form durable and dense layers containing nano-sized pores, nano-gaps and some feather-like structures [14][15][16].…”