Physicochemical Properties of Gd2O3-ZrO2-HfO2 Ceramics as Promising Thermal Barrier Coatings

被引：3

作者：

Doronin, O. N. ^{[1
]}

Artemenko, N. I. ^{[1
]}

Stekhov, P. A. ^{[1
]}

Marakhovskii, P. S. ^{[1
]}

Stolyarova, V. L. ^{[2
]}

Vorozhtsov, V. A. ^{[2
]}

机构：

[1] VIAM, Kurchatov Inst, Moscow 105005, Russia

[2] St Petersburg State Univ, St Petersburg 199034, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2022年 / 67卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

thermal barrier coating; gadolinium oxide; zirconium oxide; hafnium oxide; TRANSFORMATION;

D O I：

10.1134/S0036023622050060

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In continuation of work on potentials for the design of high-performance thermal barrier coatings based on three-component ceramic materials containing rare-earth oxides, here we discuss the results of our study of the effects of components on the thermophysical properties of Gd2O3-ZrO2-HfO2 ceramics. Gadolinium oxide and hafnium oxide stabilize the thermal coefficient of linear expansion (TCLE) of ceramic samples in the three-component system Gd2O3-ZrO2-HfO2. Given that the gadolinium oxide and hafnium oxide are in equal amounts (10 to 15 mol %) and zirconia is an amount of at least 70 mol %, the TCLE (alpha(L)) of Gd2O3-ZrO2-HfO2 ceramics ranges from 7.4 x 10(-6) to 10.5 x 10(-6) with acceptable values of thermal conductivity (0.98-1.35 W/(m K)).

引用

页码：732 / 739

页数：8

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