کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7992547 | 1516148 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray diffractional, spectroscopic and thermo-physical properties analyses on Eu-doped lanthanum zirconate ceramic for thermal barrier coatings
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: X-ray diffractional, spectroscopic and thermo-physical properties analyses on Eu-doped lanthanum zirconate ceramic for thermal barrier coatings X-ray diffractional, spectroscopic and thermo-physical properties analyses on Eu-doped lanthanum zirconate ceramic for thermal barrier coatings](/preview/png/7992547.png)
چکیده انگلیسی
To improve the protective temperature of thermal barrier coatings (TBCs), different Eu-doping ratios of La2Zr2O7 with pyrochlore structure, which are more stable in thermodynamics, were synthesized by coprecipitation-calcination method. Phase structure, grain growth kinetics, bond strength, thermo-physical properties of the doped La2Zr2O7 were investigated under different doping ratios. The results show that nano-sized doped La2Zr2O7 grains (<100â¯nm) grow rapidly under elevated synthesis temperature. Meanwhile the increasing Eu3+ ions lead to more imperfects, changes of bond strength, and slight disorder of the lattice. The coefficient of thermal expansion (CTE) of Eu-doped La2Zr2O7 is notably improved as Eu3+ ions increase. The thermal conductivity decreases at initial period and increases afterwards, which reaches the lowest value for the composition of (La0.6Eu0.4)2Zr2O7.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 746, 25 May 2018, Pages 62-67
Journal: Journal of Alloys and Compounds - Volume 746, 25 May 2018, Pages 62-67
نویسندگان
Renbo Zhu, Jianpeng Zou, Duopei Wang, Ke Zou, Di Gao, Jie Mao, Min Liu,