scholarly journals Correction to: Comparison of Single-Phase and Two-Phase Composite Thermal Barrier Coatings with Equal Total Rare-Earth Content

2018 ◽  
Vol 27 (6) ◽  
pp. 1038-1038
Author(s):  
Amarendra K. Rai ◽  
Michael P. Schmitt ◽  
Mitchell R. Dorfman ◽  
Dongming Zhu ◽  
Douglas E. Wolfe
Keyword(s):  
Rare Earth ◽  
Thermal Barrier Coatings ◽  
Single Phase ◽  
Thermal Barrier ◽  
Two Phase ◽  
Barrier Coatings ◽  
Rare Earth Content

Comparison of Single-Phase and Two-Phase Composite Thermal Barrier Coatings with Equal Total Rare-Earth Content

2018 ◽  
Vol 27 (4) ◽  
pp. 556-565 ◽  
Author(s):  
Amarendra K. Rai ◽  
Michael P. Schmitt ◽  
Mitchell R. Dorfman ◽  
Dongming Zhu ◽  
Douglas E. Wolfe
Keyword(s):  
Rare Earth ◽  
Thermal Barrier Coatings ◽  
Single Phase ◽  
Thermal Barrier ◽  
Two Phase ◽  
Barrier Coatings ◽  
Rare Earth Content

Preparation and Thermophysical Properties of (La0.4Sm0.5Yb0.1)2(Zr0.7Ce0.3)2O7 Ceramic for Thermal Barrier Coatings

2008 ◽  
Vol 368-372 ◽  
pp. 1334-1336
Author(s):  
Ling Liu ◽  
Qiang Xu ◽  
Fu Chi Wang ◽  
Hong Song Zhang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Rare Earth ◽  
Phase Composition ◽  
Thermal Barrier Coatings ◽  
Thermophysical Properties ◽  
Single Phase ◽  
Pyrochlore Structure ◽  
Thermal Barrier ◽  
Barrier Coatings

A complex rare-earth zirconate (La0.4Sm0.5Yb0.1)2(Zr0.7Ce0.3)2O7 powder for thermal barrier coatings (TBCs) was synthesized by coprecipitation method. The phase composition, microstructure and the thermophysical properties were investigated. XRD results revealed that single phase (La0.4Sm0.5Yb0.1)2(Zr0.7Ce0.3)2O7 with pyrochlore structure was prepared and the SEM result showed that the microstructure of the product was dense and no other phases existed among the particles. With the temperature increasing, the thermal expansion coefficient (CTE) of the ceramic increased, while the thermal conductivity decreased. The results indicated that CTE of the ceramic was slightly higher than that of La2Zr2O7 and the thermal conductivity of the ceramic was lower than that of La2Zr2O7. These results imply that (La0.4Sm0.5Yb0.1)2(Zr0.7Ce0.3)2O7 can be explored as the candidate material for the ceramic layer in TBCs system.

Design, Preparation and Thermal Properties of (La0.4Sm0.5Yb0.1)2Zr2O7 Ceramic for Thermal Barrier Coatings

2012 ◽  
Vol 512-515 ◽  
pp. 469-473 ◽  
Author(s):  
L. Liu ◽  
Z. Ma ◽  
F.C. Wang ◽  
Q. Xu
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Thermal Properties ◽  
Rare Earth ◽  
Thermal Expansion Coefficient ◽  
Thermal Barrier Coatings ◽  
Expansion Coefficient ◽  
Phonon Transport ◽  
Thermal Barrier ◽  
Barrier Coatings

According to the theory of phonon transport and thermal expansion, a new complex rare-earth zirconate ceramic (La0.4Sm0.5Yb0.1)2Zr2O7, with low thermal conductivity and high thermal expansion coefficient, has been designed by doping proper ions at A sites. The complex rare-earth zirconate (La0.4Sm0.5Yb0.1)2Zr2O7 powder for thermal barrier coatings (TBCs) was synthesized by coprecipitation-calcination method. The phase, microstructure and thermal properties of the new material were investigated. The results revealed that single phase (La0.4Sm0.5Yb0.1)2Zr2O7 with pyrochlore structure was synthesized. The thermal conductivity and the thermal expansion coefficient of the designed complex rare-earth zirconate ceramic is about 1.3W/m•K and 10.5×10-6/K, respectively. These results imply that (La0.4Sm0.5Yb0.1)2Zr2O7 can be explored as the candidate material for the ceramic layer in TBCs system.

Rare-Earth Zirconate Ceramics with Fluorite Structure for Thermal Barrier Coatings

2006 ◽  
Vol 89 (1) ◽  
pp. 340-342 ◽  
Author(s):  
Qiang Xu ◽  
Wei Pan ◽  
Jingdong Wang ◽  
Chunlei Wan ◽  
Longhao Qi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Thermal Barrier Coatings ◽  
Fluorite Structure ◽  
Thermal Barrier ◽  
Barrier Coatings

Thermal Barrier Coatings on the Base of Samarium Zirconates

2018 ◽  
pp. 79-106
Author(s):  
Sebastian Oliwer Jucha ◽  
Grzegorz Jan Moskal
Keyword(s):  
Rare Earth ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Insulation Layer ◽  
Barrier Coatings ◽  
Alternative Material ◽  
Static Oxidation ◽  
Tbc Systems ◽  
Samarium Zirconate

The zirconates of rare earth elements, such as Sm2Zr2O7, can be an alternative material for zirconia modified by yttria (8YSZ) usually used as an insulation layer in thermal barrier coatings (TBC) systems. This chapter describes the morphology of feedstock zirconate powder, internal morphology and selected properties of different samarium zirconate TBC systems. These included: composite TBC coatings of Sm2Zr2O7 + 8YSZ type with different ratio of both used to coatings deposition powders (25/75, 50/50 and 75/25) as well as the TBC of double ceramic layer (DCL) type with an 8YSZ internal layer and an outer layer of Sm2Zr2O7 type, and a monolayer TBC based on Sm2Zr2O7. Another presented subject is related to the oxidation resistance of TBC systems during static oxidation test at temperature 1100°C. In this case, the special emphasis was taken on the characterization of thermally grown oxides (TGO) zone thickness where the most important phenomena related with overall live-time of TBC systems usually take place.

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