Phase composition, microstructure and thermophysical properties of the Srx(Zr0.9Y0.05Yb0.05)O1.95+x ceramics

Phase composition, microstructure and thermophysical properties of the Srx(Zr0.9Y0.05Yb0.05)O1.95+x ceramics
复制标题

Srx(Zr0.9Y0.05​​Yb0.05)O1.95 x 陶瓷的相组成、显微结构和热物性

DOI:
10.1016/j.jeurceramsoc.2020.12.031
复制
发表时间:
2021-04
期刊:
J. Eur. Ceram. Soc.
影响因子:
--
通讯作者:
Manyu Bao
Manyu Bao
中科院分区:
其他
文献类型:
--
作者:
Wen Ma;Yuanming Gao;Jingxin Zhang;Yu Bai;Ruiling Jia;Hongying Dong;Ruijun Wang;Manyu Bao

文献摘要

参考文献

被引文献

相似文献

采用固相反应烧结法制备了Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0,0.9,0.8,0.7)陶瓷。烧结的Sr1.0(Zr0.9Y0.05Yb0.05)O2.95是单相固溶体,而烧结的Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=0.9 - 0.7)是复合物,并且在烧结的Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0,0.9)中观察到显著的晶粒生长抑制。稀土元素在体相材料中的分布表明,Yb和Y优先取代SrZrO 3中的Zr位,RE 2 O3在纯SrZrO 3中的最高固溶度为10.8mol%。烧结Srx(Zr0.9Y0.05Yb0.05)O1.95+ x的热膨胀系数高达1200°C时的11.0×10− 6 K-1。Sr0.8(Zr0.9Y0.05Yb0.05)O2.75在800°C时的热导率最低,为1.38 W·m-1·K-1。Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0,0.9,0.8)在600 ~ 1400°C范围内没有相变,而Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=0.9,0.8)在整个研究温度范围内具有优异的高温相稳定性。因此,Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0,0.9,0.8)被认为是有前途的热障涂层材料,与YSZ相比,它可以在更高的温度下工作。
Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0, 0.9, 0.8, 0.7) ceramics were prepared by solid state reaction sintering. The sintered Sr1.0(Zr0.9Y0.05Yb0.05)O2.95is a single-phase solid solution while the sintered Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=0.9−0.7) are composites, and a significant grain growth inhibition is observed in the sintered Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0, 0.9). Rare-earth elements distribution in the bulk materials indicates that Yb and Y preferentially substitute Zr-sites in SrZrO3, and the highest solubility of RE2O3in pure SrZrO3is ∼0.8 mol%. The sintered Srx(Zr0.9Y0.05Yb0.05)O1.95+xhave high thermal expansion coefficients up to ∼11.0×10−6K-1(1200°C). Sr0.8(Zr0.9Y0.05Yb0.05)O2.75has the lowest thermal conductivity of 1.38 W·m-1·K-1at 800°C. Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=1.0, 0.9, 0.8) show no phase transition from 600 to 1400°C, whereas Srx(Zr0.9Y0.05Yb0.05)O1.95+x(x=0.9, 0.8) have excellent high-temperature phase stability over the whole investigated temperature range. Therefore, Srx(Zr0.9Y0.05Yb0.05)O1.95+x (x=1.0, 0.9, 0.8) are considered as promising TBCs materials that might be operated at higher temperatures compared to YSZ.
DOI: 10.1111/j.1551-2916.2007.01678.x
发表时间: 2007-07
影响因子: 3.9
作者:
P. Simoncic;A. Navrotsky
通讯作者: P. Simoncic;A. Navrotsky
DOI: 10.1016/j.jeurceramsoc.2011.03.036
发表时间: 2011-08
影响因子: 5.7
作者:
Xiaoyu Xie;Hongbo Guo;S. Gong;Huibin Xu
通讯作者: Xiaoyu Xie;Hongbo Guo;S. Gong;Huibin Xu
DOI: 10.1111/j.1744-7402.2004.tb00182.x
发表时间: 2005-01
影响因子: 2.1
作者:
U. Schulz;B. Saruhan;K. Fritscher;C. Leyens
通讯作者: U. Schulz;B. Saruhan;K. Fritscher;C. Leyens
DOI: 10.1111/j.1551-2916.2008.02472.x
发表时间: 2008-08
影响因子: 3.9
作者:
Wen Ma;D. Mack;R. Vaßen;D. Stöver
通讯作者: Wen Ma;D. Mack;R. Vaßen;D. Stöver
DOI: 10.1016/s0924-0136(99)00243-5
发表时间: 1999-08
影响因子: 6.3
作者:
B. Siebert;C. Funke;R. Vaβen;D. Stöver
通讯作者: B. Siebert;C. Funke;R. Vaβen;D. Stöver