Enhancement of thermal properties of ytterbium-cerium oxide by zirconium doping for thermal barrier coatings

Wang，Yujing1; Zhang，Lei2; Wu，Wangjie3; Yang，Jun3,4

2019

10.1080/09500839.2019.1677956

PHILOSOPHICAL MAGAZINE LETTERS   影响因子和分区

0950-0839

1362-3036

Rare-earth cerium oxides (RECeO, RE = rare-earth elements) are proposed as promising thermal barrier coatings (TBCs) material due to large thermal expansion coefficient (TEC), phase stability and a comparable thermal cycling life to Yttria-Stabilized Zirconia (YSZ). However, the thermal conductivity of RECeO is relatively higher than that of both YSZ and rare-earth zirconates. Here, we report an effective method of reducing the thermal conductivity of YbCeO by Zr-doping. It is shown that, due to the strong phonon scattering caused by mass and radius differences between Ce and Zr ions, and disorder introduced into structures, the thermal conductivity of solid solutions is remarkably reduced with the increasing of Zr content. Considering the high TEC, the Zr-doped YbCeO solid solutions are believed to be promising candidate materials for TBCs at elevated temperature.

phonons solid solutions Thermal barrier coatings thermal expansion thermal properties

SCI ; EI

英语

通讯

Basic Discipline Development Fund of Army Engineering University of PLA[KYJBJQZL1905]

Materials Science ; Metallurgy & Metallurgical Engineering ; Physics

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter

WOS:000492447300001

TAYLOR & FRANCIS LTD

20194507636870

Cerium oxide ; Phonons ; Rare earths ; Solid solutions ; Thermal conductivity of solids ; Thermal expansion ; Thermodynamic properties ; Ytterbium compounds ; Yttria stabilized zirconia ; Yttrium oxide ; Zirconia ; Zirconium

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Inorganic Compounds:804.2 ; Solid State Physics:933

PHYSICS

2-s2.0-85074494138

Scopus

1.College of Communications EngineeringArmy Engineering University of PLA,Nanjing,China
2.Department of Electrical and Electronic EngineeringSouthern University of Science and Technology,Shenzheng,China
3.Department of general educationArmy Engineering University of PLA,Nanjing,China
4.State Key Laboratory of New Ceramics and Fine ProcessingDepartment of Materials Science and EngineeringTsinghua University,Beijing,China

Wang，Yujing,Zhang，Lei,Wu，Wangjie,et al. Enhancement of thermal properties of ytterbium-cerium oxide by zirconium doping for thermal barrier coatings[J]. PHILOSOPHICAL MAGAZINE LETTERS,2019,99(9):309-316.

Wang，Yujing,Zhang，Lei,Wu，Wangjie,&Yang，Jun.(2019).Enhancement of thermal properties of ytterbium-cerium oxide by zirconium doping for thermal barrier coatings.PHILOSOPHICAL MAGAZINE LETTERS,99(9),309-316.

Wang，Yujing,et al."Enhancement of thermal properties of ytterbium-cerium oxide by zirconium doping for thermal barrier coatings".PHILOSOPHICAL MAGAZINE LETTERS 99.9(2019):309-316.