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Microstructure and Thermal Properties of Atmospheric Plasma-Sprayed Yb2Si2O7Coating
Zhong, Xin1,2; Niu, Yaran2; Huang, Liping2; Li, Hong1; Zheng, Xuebin2; Ding, Chuanxian2; Sun, Jinliang1
2017
发表期刊Journal of Thermal Spray Technology
ISSN10599630
卷号26期号:1-2页码:203-210
摘要In the present work, Yb2Si2O7powder was synthesized by solid-state reaction using Yb2O3and SiO2powders as starting materials. Atmospheric plasma spray technique was applied to fabricate Yb2Si2O7coating. The phase composition and microstructure of the coating were characterized. The density, open porosity and Vickers hardness of the coating were investigated. Its thermal stability was evaluated by thermogravimetry and differential thermal analysis (TG-DTA). The thermal diffusivity and thermal conductivity of the coating were measured. The results showed that the as-sprayed coating was mainly composed of crystalline Yb2Si2O7with amorphous phase. The coating had a dense structure containing defects, such as pores, interfaces and microcracks. The TG-DTA results showed that there was almost no mass change from room temperature to 1200 °C, while a sharp exothermic peak appeared at around 1038 °C in DTA curve, which indicated that the amorphous phase crystallized. The thermal conductivity of the coating decreased with rise in temperature up to 600 °C and then followed by an increase at higher temperatures. The minimum value of the thermal conductivity of the Yb2Si2O7coating was about 0.68 W/(m K). © 2016, ASM International.
DOI10.1007/s11666-016-0482-9
EI入藏号20165003108809
EI主题词Plasma spraying
EI分类号641.1 Thermodynamics - 801 Chemistry - 802.2 Chemical Reactions - 813.2 Coating Materials - 932.3 Plasma Physics - 951 Materials Science
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25823
专题中国科学院上海硅酸盐研究所
作者单位1.Research Center of Composite Materials, Shanghai University, Shanghai; 200072, China;
2.Key Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
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Zhong, Xin,Niu, Yaran,Huang, Liping,et al. Microstructure and Thermal Properties of Atmospheric Plasma-Sprayed Yb2Si2O7Coating[J]. Journal of Thermal Spray Technology,2017,26(1-2):203-210.
APA Zhong, Xin.,Niu, Yaran.,Huang, Liping.,Li, Hong.,Zheng, Xuebin.,...&Sun, Jinliang.(2017).Microstructure and Thermal Properties of Atmospheric Plasma-Sprayed Yb2Si2O7Coating.Journal of Thermal Spray Technology,26(1-2),203-210.
MLA Zhong, Xin,et al."Microstructure and Thermal Properties of Atmospheric Plasma-Sprayed Yb2Si2O7Coating".Journal of Thermal Spray Technology 26.1-2(2017):203-210.
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