Preparation, thermophysical performances of Ca3Ln3Ti7Ta2O26.5 (Ln=Yb and Y) oxides for thermal barrier coating applications

Zhang Hongsong; Yang Shusen; Tong Yuping; Yang Xianfeng; Sang Weiwei; Zhao Yongtao

doi:10.1016/j.ceramint.2019.11.136

Preparation, thermophysical performances of Ca₃Ln₃Ti₇Ta₂O_26.5 (Ln=Yb and Y) oxides for thermal barrier coating applications

Zhang Hongsong
, Yang Shusen
, Tong Yuping
, Yang Xianfeng
, Sang Weiwei
, Zhao Yongtao

Henan University of Engineering
Railway Police College
North China University of Water Sources and Electric Powder
Changsha University of Science and Technology

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this manuscript, the Ca₃Ln₃Ti₇Ta₂O_26.5 (Ln = Y and Yb) oxides were prepared by employing a high-temperature solid-phase reaction method at 1773 K for 10 h. The phase compositions and thermal-physical performances were studied. The results show that the synthesized oxides are of a single pyrochlore-type lattice, the thermal conductivity of Ca₃Y₃Ti₇Ta₂O_26.5 is larger than that of Ca₃Yb₃Ti₇Ta₂O_26.5, and the coefficient of thermal expansion of Ca₃Yb₃Ti₇Ta₂O_26.5 is higher than that of Ca₃Y₃Ti₇Ta₂O_26.5. The thermal-physical properties match well with the requirements for thermal barrier coatings.

Original language	English
Pages (from-to)	6531-6536
Number of pages	6
Journal	Ceramics International
Volume	46
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2019.11.136
State	Published - 1 Apr 2020
Externally published	Yes

Keywords

Pyrochlore complex oxides
Rare earth titanate
Thermal-physical performances

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10.1016/j.ceramint.2019.11.136

Cite this

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title = "Preparation, thermophysical performances of Ca3Ln3Ti7Ta2O26.5 (Ln=Yb and Y) oxides for thermal barrier coating applications",

abstract = "In this manuscript, the Ca3Ln3Ti7Ta2O26.5 (Ln = Y and Yb) oxides were prepared by employing a high-temperature solid-phase reaction method at 1773 K for 10 h. The phase compositions and thermal-physical performances were studied. The results show that the synthesized oxides are of a single pyrochlore-type lattice, the thermal conductivity of Ca3Y3Ti7Ta2O26.5 is larger than that of Ca3Yb3Ti7Ta2O26.5, and the coefficient of thermal expansion of Ca3Yb3Ti7Ta2O26.5 is higher than that of Ca3Y3Ti7Ta2O26.5. The thermal-physical properties match well with the requirements for thermal barrier coatings.",

keywords = "Pyrochlore complex oxides, Rare earth titanate, Thermal-physical performances",

author = "Zhang Hongsong and Yang Shusen and Tong Yuping and Yang Xianfeng and Sang Weiwei and Zhao Yongtao",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2020",

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day = "1",

doi = "10.1016/j.ceramint.2019.11.136",

language = "英语",

volume = "46",

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TY - JOUR

T1 - Preparation, thermophysical performances of Ca3Ln3Ti7Ta2O26.5 (Ln=Yb and Y) oxides for thermal barrier coating applications

AU - Hongsong, Zhang

AU - Shusen, Yang

AU - Yuping, Tong

AU - Xianfeng, Yang

AU - Weiwei, Sang

AU - Yongtao, Zhao

PY - 2020/4/1

Y1 - 2020/4/1

N2 - In this manuscript, the Ca3Ln3Ti7Ta2O26.5 (Ln = Y and Yb) oxides were prepared by employing a high-temperature solid-phase reaction method at 1773 K for 10 h. The phase compositions and thermal-physical performances were studied. The results show that the synthesized oxides are of a single pyrochlore-type lattice, the thermal conductivity of Ca3Y3Ti7Ta2O26.5 is larger than that of Ca3Yb3Ti7Ta2O26.5, and the coefficient of thermal expansion of Ca3Yb3Ti7Ta2O26.5 is higher than that of Ca3Y3Ti7Ta2O26.5. The thermal-physical properties match well with the requirements for thermal barrier coatings.

AB - In this manuscript, the Ca3Ln3Ti7Ta2O26.5 (Ln = Y and Yb) oxides were prepared by employing a high-temperature solid-phase reaction method at 1773 K for 10 h. The phase compositions and thermal-physical performances were studied. The results show that the synthesized oxides are of a single pyrochlore-type lattice, the thermal conductivity of Ca3Y3Ti7Ta2O26.5 is larger than that of Ca3Yb3Ti7Ta2O26.5, and the coefficient of thermal expansion of Ca3Yb3Ti7Ta2O26.5 is higher than that of Ca3Y3Ti7Ta2O26.5. The thermal-physical properties match well with the requirements for thermal barrier coatings.

KW - Pyrochlore complex oxides

KW - Rare earth titanate

KW - Thermal-physical performances

UR - https://www.scopus.com/pages/publications/85078775069

U2 - 10.1016/j.ceramint.2019.11.136

DO - 10.1016/j.ceramint.2019.11.136

M3 - 文章

AN - SCOPUS:85078775069

SN - 0272-8842

VL - 46

SP - 6531

EP - 6536

JO - Ceramics International

JF - Ceramics International

IS - 5

ER -

Preparation, thermophysical performances of Ca₃Ln₃Ti₇Ta₂O_26.5 (Ln=Yb and Y) oxides for thermal barrier coating applications

Abstract

Keywords

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