Effect of Y content on interface reaction and wettability between a nickel-base single crystal superalloy melt and ceramic mould

doi:10.1016/j.jallcom.2019.03.037

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	Effect of Y content on interface reaction and wettability between a nickel-base single crystal superalloy melt and ceramic mould
	Zi, Yun 1,3; Meng, Jie 3; Zhang, Chaowei 3; Yang, Yanhong 3; Zhou, Yizhou 3; Ding, Yutian 2
刊名	Journal of Alloys and Compounds
	2019-06-15
卷号	789 页码:472-484
关键词	Alumina Aluminum alloys Aluminum oxide Hafnium alloys Hafnium oxides Molds Nickel Nickel alloys Reaction products Scanning electron microscopy Silica Silicon Single crystals Superalloys Surface analysis Wetting X ray photoelectron spectroscopy Yttrium aluminum garnet Ceramic mould Critical concentration Electron probe micro analyzer Elemental compositions Interface reactions Micro-structural characterization Nickel base single crystal superalloy Nickel-base single crystals
ISSN号	09258388
DOI	10.1016/j.jallcom.2019.03.037
英文摘要	In this paper, the effect of Y content on interface reaction and wettability between a nickel-base single crystal supperalloy melt and ceramic mould were studied by means of sessile drop tests. The microstructural characterization of the alloy-ceramic interface and the elemental compositions of reaction products were performed by scanning electron microscope (SEM) and electron probe micro-analyzer (EPMA), the phases of reaction products were identified by X-ray diffraction (XRD), and the surface analysis of reaction products was carried out by X-ray photoelectron spectroscopy (XPS). The results showed that Al and Hf in the alloy reacted with SiO2 in the ceramic mould when Y content was lower than 0.011 wt%, and the reaction products were Al2O3 and HfO2, with little change in the wetting angle. However, when Y content was higher than 0.017 wt%, Y and Al in the alloy reacted with SiO2 in the ceramic mould, and the wetting angle decreased significantly. 0.017 wt% was the critical concentration of Y content that would cause interface reactions. The reaction products of 0.017 and 0.025 wt% Y alloys were Y3Al2(AlO4)3, the reaction products of 0.1 wt% Y alloy were Y3Al5O12 and Y4Al2O9, and the reaction products of 0.5 and 1.0 wt% Y alloys were double reaction layer composed of Y2O3 and Y3Al5O12. Si generated by the interface reactions could react with O2 in the atmosphere to form SiOx during the cooling of the alloy-ceramic couples. © 2019
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000464542700057
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150605]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Department of Materials Science and Engineering, University of Science and Technology of China, Hefei; 230026, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 3.Institute of Metal Research, Chinese Academy of Sciences, Shenyang; 110016, China;
推荐引用方式 GB/T 7714	Zi, Yun,Meng, Jie,Zhang, Chaowei,et al. Effect of Y content on interface reaction and wettability between a nickel-base single crystal superalloy melt and ceramic mould[J]. Journal of Alloys and Compounds,2019,789:472-484.
APA	Zi, Yun,Meng, Jie,Zhang, Chaowei,Yang, Yanhong,Zhou, Yizhou,&Ding, Yutian.(2019).Effect of Y content on interface reaction and wettability between a nickel-base single crystal superalloy melt and ceramic mould.Journal of Alloys and Compounds,789,472-484.
MLA	Zi, Yun,et al."Effect of Y content on interface reaction and wettability between a nickel-base single crystal superalloy melt and ceramic mould".Journal of Alloys and Compounds 789(2019):472-484.