Optimizing the structure and properties of Y2O3 stabilized zirconia: An atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) based comparative study

doi:10.1016/j.ceramint.2018.07.021

	Optimizing the structure and properties of Y2O3 stabilized zirconia: An atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) based comparative study
	Khan, Matiunah 1,2; Zeng, Yi ; Hu, Ningning ; Lan, Zhenghua 1; Wang, Yongzhe
刊名	CERAMICS INTERNATIONAL
	2018
卷号	44 期号:15 页码:18135
关键词	APS SPPS, 8YSZ, Microstructure Thermal conductivity
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.07.021
英文摘要	The yttria stabilized zirconia (8%YSZ) is widely used to insulate the metallic components of the engine from high temperature and improve the operating temperature of gas turbine engines. With different processing parameters, 8YSZ coatings are prepared by atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) techniques and the microstructural features and thermodynamics properties are compared. The electron back scattered diffraction (EBSD) analysis indicate that the substitutional point defects (Zr0.86Y0.14O1.93) in the 8YSZ APS coatings are considerably higher than the corresponding SPPS coatings. The replacement of Zr4+ by Y3+ disturbs the charge neutrality of the system which might be compensated by the creation of oxygen vacancy. Both the substitutional point defects and the oxygen vacancies are the sources of phonon scattering, modifying the thermal conductivity of the coating. Pores and cracks are qualitatively and quantitatively analyzed in the microstructure of 8YSZ coatings. Strain tolerant and high thermal cycling life coatings are prepared by SPPS due to the existence of vertical cracks in the microstructure. Comparing the thermal insulation properties of the coatings, the APS coating provided lower thermal conductivities relative to the SPPS coatings which might be due to the high concentration of point defects and low concentration of the mixed oxide phase.
学科主题	Materials Science, Ceramics
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000445993000072
资助机构	We gratefully acknowledge the financial support from National Key Research and Development Program of China (No. 2018YFB0704400), National Key R & D program of China (No. 2018YFB0704402), International Partnership Program of Sciences (No. GJHZ1721), CAS key foundation for exploring scientific instrument (No. YJKYYQ20170041), Shanghai sailing program (No. 18YF1427000), Shanghai foundation for new research methods (No. 17142201500), Key Research Program of Frontier Science CAS, and Postdoctor industry base, Baoshan District Shanghai. ; We gratefully acknowledge the financial support from National Key Research and Development Program of China (No. 2018YFB0704400), National Key R & D program of China (No. 2018YFB0704402), International Partnership Program of Sciences (No. GJHZ1721), CAS key foundation for exploring scientific instrument (No. YJKYYQ20170041), Shanghai sailing program (No. 18YF1427000), Shanghai foundation for new research methods (No. 17142201500), Key Research Program of Frontier Science CAS, and Postdoctor industry base, Baoshan District Shanghai.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24638]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Shanghai Career Met Furnace Mat Co Ltd, Shanghai, Peoples R China 3.KUST, Dept Phys, Kohat 26000, Pakistan
推荐引用方式 GB/T 7714	Khan, Matiunah,Zeng, Yi,Hu, Ningning,et al. Optimizing the structure and properties of Y2O3 stabilized zirconia: An atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) based comparative study[J]. CERAMICS INTERNATIONAL,2018,44(15):18135, 18142.
APA	Khan, Matiunah,Zeng, Yi,Hu, Ningning,Lan, Zhenghua,&Wang, Yongzhe.(2018).Optimizing the structure and properties of Y2O3 stabilized zirconia: An atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) based comparative study.CERAMICS INTERNATIONAL,44(15),18135.
MLA	Khan, Matiunah,et al."Optimizing the structure and properties of Y2O3 stabilized zirconia: An atmospheric plasma spray (APS) and solution precursor plasma spray (SPPS) based comparative study".CERAMICS INTERNATIONAL 44.15(2018):18135.