(Sm0.5Gd0.2Nd0.3)2(Hf0.3Ce0.7)2O7复合氧化物的热物理性能

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (5): 933-937.

(Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇复合氧化物的热物理性能

冉书明, 郭怡

重庆水利电力职业技术学院,智能制造学院,重庆 402160

收稿日期:2021-01-27 出版日期:2021-05-15 发布日期:2021-06-15
作者简介:冉书明(1976—),男,重庆市人,副教授。E-mail:zhsandchen@126.com
基金资助:
重庆市教科委科学技术研究项目(KJZD-K201903801)

Thermophysical Performances of (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ Composite Oxides

RAN Shuming, GUO Yi

School of Intelligent Manufacturing, Chongqing Water Resources and Electrical Engineering College, Chongqing 402160, China

Received:2021-01-27 Online:2021-05-15 Published:2021-06-15

摘要/Abstract

摘要： 为寻求新型热障涂层用陶瓷材料,本文采用高温固相烧结法制备了(Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇复合氧化物。利用XRD分析了其晶体结构,SEM分析其显微组织,膨胀仪测试其热膨胀性能,激光热导仪测试其热扩散系数。结果表明,成功制备了具有单一萤石晶体结构的(Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇复合氧化物。其显微组织结构致密,晶界清晰无其他相存在。由于复杂的元素组成和较大的原子量,其热导率明显低于7YSZ和Sm₂Ce₂O₇。其较低的热膨胀系数则归因于B位离子较小的离子半径,但其热膨胀系数依然满足热障涂层的要求。

关键词: 稀土铈酸盐, 高温固相烧结法, 热障涂层, 热导率, 热膨胀系数

Abstract: In order to develop novel ceramic material for thermal barrier coatings, the (Sm_0.5Gd_0.2 Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ composite oxides were synthesized by high temperature sintering method in this paper. Its lattice-type was analyzed by XRD, the microstructure was analyzed by SEM, thermal expansion property was tested by thermal expansion instrument, and thermal diffusivity was measured by laser thermal laser conductor-meter. Results show that the pure (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ with single fluorite lattice was synthesized. The microstructure is very dense, and interfaces between boundaries are very clean, no other phases can be found. Owing to the complex element constituent and high atomic weight, its thermal conductivity is lower than those of 7YSZ and Sm₂Ce₂O₇. The relative low thermal expansion coefficient of (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ can be contributed to the lower ionic radius of cations at B sites, while the thermal expansion coefficient meets to the requirement for thermal barrier coatings.

Key words: rare earth cerium oxide, high temperature sintering method, thermal barrier coating, thermal conductivity, thermal expansion coefficient

中图分类号:

V263
TQ174.1

冉书明, 郭怡. (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇复合氧化物的热物理性能[J]. 人工晶体学报, 2021, 50(5): 933-937.

RAN Shuming, GUO Yi. Thermophysical Performances of (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ Composite Oxides[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(5): 933-937.

参考文献

[1] 魏晓东,侯国梁,赵荻,等.氧化物掺杂YSZ热障涂层的最新研究进展[J].表面技术,2020,49(6):92-103.
WEI X D, HOU G L, ZHAO D, et al. Recent research progress on oxide doped YSZ thermal barrier coatings[J]. Surface Technology, 2020, 49(6): 92-103(in Chinese).
[2] 刘光,张啸寒,贾利,等.等离子喷涂Mo/8YSZ功能梯度热障涂层结构优化与热力耦合模拟计算[J].表面技术,2020,49(3):213-223.
LIU G, ZHANG X H, JIA L, et al. Structural optimization and thermo-mechanical coupling simulation of plasma sprayed Mo/8YSZ functionally graded thermal barrier coating[J]. Surface Technology, 2020, 49(3): 213-223(in Chinese).
[3] 周飞飞,刘敏,邓春明,等.等离子喷涂超高温热障涂层用纳米结构La₂(Zr_0.75Ce_0.25)₂O₇球形喂料的研究[J].表面技术,2020,49(4):98-103+112.
ZHOU F F, LIU M, DENG C M, et al. Nanostructured La₂(Zr_0.75Ce_0.25)₂O₇ spherical feedstocks for plasma sprayed ultra-high temperature thermal barrier coatings[J]. Surface Technology, 2020, 49(4): 98-103+112(in Chinese).
[4] CAO X Q, VASSEN R, STOEVER D. Ceramic materials for thermal barrier coatings[J]. Journal of the European Ceramic Society, 2004, 24(1): 1-10.
[5] DEHKHARGHANI A M F, RAHIMIPOUR M R, ZAKERI M. Improving the thermal shock resistance and fracture toughness of synthesized La₂Ce₂O₇ thermal barrier coatings through formation of La₂Ce₂O₇/YSZ composite coating via air plasma spraying[J]. Surface and Coatings Technology, 2020, 399: 126174.
[6] LIU Y, BAI Y, LI E B, et al. Preparation and characterization of SrZrO₃-La₂Ce₂O₇ composite ceramics as a thermal barrier coating material[J]. Materials Chemistry and Physics, 2020, 247: 122904.
[7] ZHANG H, SUN J B, DUO S W, et al. Thermal and mechanical properties of Ta₂O₅ doped La₂Ce₂O₇ thermal barrier coatings prepared by atmospheric plasma spraying[J]. Journal of the European Ceramic Society, 2019, 39(7): 2379-2388.
[8] LIU K, TANG J J, BAI Y, et al. Particle in-flight behavior and its influence on the microstructure and mechanical property of plasma sprayed La₂Ce₂O₇ thermal barrier coatings[J]. Materials Science and Engineering: A, 2015, 625: 177-185.
[9] ZHANG H S, YAN S Q, CHEN X G. Preparation and thermophysical properties of fluorite-type samarium-dysprosium-cerium oxides[J]. Journal of the European Ceramic Society, 2014, 34(1): 55-61.
[10] SU S J, DING Y, SHU X Y, et al. Nd and Ce simultaneous substitution driven structure modifications in Gd_2-xNd_xZr_2-yCe_yO₇[J]. Journal of the European Ceramic Society, 2015, 35(6): 1847-1853.
[11] DAI H, ZHONG X H, LI J Y, et al. Neodymium-cerium oxide as new thermal barrier coating material[J]. Surface and Coatings Technology, 2006, 201(6): 2527-2533.
[12] SUBRAMANIAN M A, ARAVAMUDAN G, SUBBA RAO G V. Oxide pyrochlores—a review[J]. Progress in Solid State Chemistry, 1983, 15(2): 55-143.
[13] HESS N J, BEGG B D, CONRADSON S D, et al. Spectroscopic investigations of the structural phase transition in Gd₂(Ti_1-yZr_y)₂O₇Pyrochlores[J]. The Journal of Physical Chemistry B, 2002, 106(18): 4663-4677.
[14] KLEMENS P G. Phonon scattering by oxygen vacancies in ceramics[J]. Physica B: Condensed Matter, 1999, 263/264: 102-104.
[15] CLARKE D R. Materials selection guidelines for low thermal conductivity thermal barrier coatings[J]. Surface and Coatings Technology, 2003, 163/164: 67-74.

(Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇复合氧化物的热物理性能

Thermophysical Performances of (Sm_0.5Gd_0.2Nd_0.3)₂(Hf_0.3Ce_0.7)₂O₇ Composite Oxides

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