CAS OpenIR
Preparation and thermophysical properties of Ti4+ doped zirconia matrix thermal barrier coatings
Yang, Ming1,2; Zhu, Yongping1; Wang, Xueying1; Wang, Qin3; Ai, Li3; Zhao, Lili1; Chu, Ying1; Guo, Shengnan1,2; Hu, Jing1,2; Zhang, Qing1,2
2019-03-10
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume777Pages:646-654
AbstractThere is an upper limited temperature of about 1200 degrees C for yttrium oxide partially stabilized zirconia coatings. With the increasing temperature of inlet gas (>1200 degrees C), new thermal barrier coatings are urgently needed to replace traditional yttrium oxide partially stabilized zirconia. Ti4+ ion doping has been recognized as an effective method to achieve this. In this work, a novel ceramic coating with low thermal conductivity at 1600 degrees C is synthesized, and the microstructure, chemical components, phase structures are analyzed. The thermal diffusivity and thermal conductivity of the as-sprayed coatings initially exhibited low values up to 1600 degrees C. The mechanism of low thermal conductivity is analyzed. The oxygen vacancies effectively reduce thermal conductivity, which can be proved by the ablation experiment (at 1600 degrees C). The effect of lattice defects caused by differences in the masses and radii of Ti4+ and Zr4+ ions on the phonon scattering coefficient is analyzed quantitatively. These results indicate that this coating is a promising candidate for thermal barrier coatings at high temperatures. (C) 2018 Elsevier B.V. All rights reserved.
KeywordThermal barrier coatings Thermal conductivity Point defects
DOI10.1016/j.jallcom.2018.11.034
Language英语
WOS KeywordCONDUCTIVITY ; MICROSTRUCTURE ; LAMGAL11O19 ; BEHAVIOR ; GAS
Funding ProjectNational Natural Science Foundation of China[51202247] ; open fund of State Key Laboratory of Multi-phase Complex Systems[MPCS-2014-D-13]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China ; open fund of State Key Laboratory of Multi-phase Complex Systems
WOS IDWOS:000454856800078
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27693
Collection中国科学院过程工程研究所
Corresponding AuthorZhu, Yongping; Wang, Xueying
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sci & Technol Scramjet Lab, Beijing 100074, Peoples R China
Recommended Citation
GB/T 7714
Yang, Ming,Zhu, Yongping,Wang, Xueying,et al. Preparation and thermophysical properties of Ti4+ doped zirconia matrix thermal barrier coatings[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,777:646-654.
APA Yang, Ming.,Zhu, Yongping.,Wang, Xueying.,Wang, Qin.,Ai, Li.,...&Zhang, Qing.(2019).Preparation and thermophysical properties of Ti4+ doped zirconia matrix thermal barrier coatings.JOURNAL OF ALLOYS AND COMPOUNDS,777,646-654.
MLA Yang, Ming,et al."Preparation and thermophysical properties of Ti4+ doped zirconia matrix thermal barrier coatings".JOURNAL OF ALLOYS AND COMPOUNDS 777(2019):646-654.
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