La2Hf2O7 ceramics as potential top-coat materials for thermal/environmental barrier coatings
La2Hf2O7 ceramics as potential top-coat materials for thermal/environmental barrier coatings
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La2Hf2O7 陶瓷作为热/环境屏障涂层的潜在面漆材料
DOI:
10.1016/j.ceramint.2019.07.235
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发表时间:
2019-07
影响因子:
5.2
通讯作者:
Xueqiang Cao
中科院分区:
文献类型:
--
作者:
Panpan Liang;Shujuan Dong;Jinyan Zeng;Jieyan Yuan;Jianing Jiang;Longhui Deng;Xin Zhou;Xueqiang Cao
La2Hf2O7(LH) ceramics with pyrochlore structure have excellent phase stability up to 1600 °C, and far superior sintering resistance as well as comparable mechanical properties to typical 8 wt% yttria-stabilized zirconia (8YSZ). More importantly, they have the coefficients of thermal expansion (CTEs) of 8.76 × 10−6K−1, lower than that of 8YSZ (10.38 × 10−6K−1), and thermal conductivities of 1.34 W/m·K at 1000 °C, approximately 40% lower than that of 8YSZ (2.1–2.22 W/m·K). These comprehensive properties promote them as thermal insulation top-coats in thermal/environmental barrier coatings (T/EBCs) on ceramic-matrix composites (CMCs) or top-coats of double-ceramic-layered thermal barrier coatings (DCL-TBCs) on superalloys.
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影响因子:
3.9
作者:
Cheng Bo;Zhang Yu-Ming;Yang Ning;Zhang Meng;Chen Lin;Yang Guan-Jun;Li Cheng-Xin;Li Chang-Jiu
通讯作者:
Li Chang-Jiu
影响因子:
5.2
作者:
J. Xiang;Shuhai Chen;Jihua Huang;Huanshui Zhang;Xingke Zhao
通讯作者:
J. Xiang;Shuhai Chen;Jihua Huang;Huanshui Zhang;Xingke Zhao
影响因子:
8.4
作者:
Huaifei Liu;Songlin Li;Qilian Li;Yongming Li
通讯作者:
Huaifei Liu;Songlin Li;Qilian Li;Yongming Li
影响因子:
5.4
作者:
J. R. Brandon;R. Taylor
通讯作者:
J. R. Brandon;R. Taylor
影响因子:
17.1
作者:
E. Opila
通讯作者:
E. Opila