Preparation and thermophysical properties of Yb-doped Ba2DyAlO5 ceramics

Ling Liu; Yinghua Wang; Zhuang Ma; Fuchi Wang; Mingming Zhu

doi:10.1016/j.matlet.2015.01.003

Preparation and thermophysical properties of Yb-doped Ba₂DyAlO₅ ceramics

Ling Liu^*, Yinghua Wang, Zhuang Ma, Fuchi Wang, Mingming Zhu

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

15 Citations (Scopus)

Abstract

A series of Ba₂(Yb_xDy_1-x)AlO₅ (x=0,0.1,0.2,0.3) ceramics for thermal barrier coatings (TBCs) were prepared by solid state reaction and hot-pressed sintering. Their phase composition, microstructure and the thermophysical properties were investigated. The results showed that single-phase Ba₂(Yb_xDy_1-x)AlO₅ (x=0,0.1,0.2,0.3) with perovskite-like structure were prepared, and performed excellent phase stability under 1400 °C. As a function of increasing x, the thermal conductivity of Ba₂(Yb_xDy_1-x)AlO₅ decreased firstly and then increased. The minimum value (1.02 W·m^-1·K^-1) was achieved for the sample with the same composite point x=0.1. The thermal expansion coefficient of the ceramics increased through doping with a maximum value around 11.6×10^-6 K^-1.

Original language	English
Pages (from-to)	33-35
Number of pages	3
Journal	Materials Letters
Volume	144
DOIs	https://doi.org/10.1016/j.matlet.2015.01.003
Publication status	Published - 1 Apr 2015

Keywords

BaDyAlO
Ceramics
Thermal barrier coatings
Thermal properties

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10.1016/j.matlet.2015.01.003

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@article{ac007d1b010a494faa90d9081eeefa80,

title = "Preparation and thermophysical properties of Yb-doped Ba2DyAlO5 ceramics",

abstract = "A series of Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) ceramics for thermal barrier coatings (TBCs) were prepared by solid state reaction and hot-pressed sintering. Their phase composition, microstructure and the thermophysical properties were investigated. The results showed that single-phase Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) with perovskite-like structure were prepared, and performed excellent phase stability under 1400 °C. As a function of increasing x, the thermal conductivity of Ba2(YbxDy1-x)AlO5 decreased firstly and then increased. The minimum value (1.02 W·m-1·K-1) was achieved for the sample with the same composite point x=0.1. The thermal expansion coefficient of the ceramics increased through doping with a maximum value around 11.6×10-6 K-1.",

keywords = "BaDyAlO, Ceramics, Thermal barrier coatings, Thermal properties",

author = "Ling Liu and Yinghua Wang and Zhuang Ma and Fuchi Wang and Mingming Zhu",

year = "2015",

month = apr,

day = "1",

doi = "10.1016/j.matlet.2015.01.003",

language = "English",

volume = "144",

pages = "33--35",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Preparation and thermophysical properties of Yb-doped Ba2DyAlO5 ceramics

AU - Liu, Ling

AU - Wang, Yinghua

AU - Ma, Zhuang

AU - Wang, Fuchi

AU - Zhu, Mingming

PY - 2015/4/1

Y1 - 2015/4/1

N2 - A series of Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) ceramics for thermal barrier coatings (TBCs) were prepared by solid state reaction and hot-pressed sintering. Their phase composition, microstructure and the thermophysical properties were investigated. The results showed that single-phase Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) with perovskite-like structure were prepared, and performed excellent phase stability under 1400 °C. As a function of increasing x, the thermal conductivity of Ba2(YbxDy1-x)AlO5 decreased firstly and then increased. The minimum value (1.02 W·m-1·K-1) was achieved for the sample with the same composite point x=0.1. The thermal expansion coefficient of the ceramics increased through doping with a maximum value around 11.6×10-6 K-1.

AB - A series of Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) ceramics for thermal barrier coatings (TBCs) were prepared by solid state reaction and hot-pressed sintering. Their phase composition, microstructure and the thermophysical properties were investigated. The results showed that single-phase Ba2(YbxDy1-x)AlO5 (x=0,0.1,0.2,0.3) with perovskite-like structure were prepared, and performed excellent phase stability under 1400 °C. As a function of increasing x, the thermal conductivity of Ba2(YbxDy1-x)AlO5 decreased firstly and then increased. The minimum value (1.02 W·m-1·K-1) was achieved for the sample with the same composite point x=0.1. The thermal expansion coefficient of the ceramics increased through doping with a maximum value around 11.6×10-6 K-1.

KW - BaDyAlO

KW - Ceramics

KW - Thermal barrier coatings

KW - Thermal properties

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U2 - 10.1016/j.matlet.2015.01.003

DO - 10.1016/j.matlet.2015.01.003

M3 - Article

AN - SCOPUS:84921525487

SN - 0167-577X

VL - 144

SP - 33

EP - 35

JO - Materials Letters

JF - Materials Letters

ER -

Preparation and thermophysical properties of Yb-doped Ba₂DyAlO₅ ceramics

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Keywords

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