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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; Meng, Jie; Zhang, Chaowei; Yang, Yanhong; Zhou, Yizhou; Ding, Yutian
2019-06-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume789Pages:472-484
AbstractIn 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 O-2 in the atmosphere to form SiOx during the cooling of the alloy-ceramic couples. (C) 2019 Published by Elsevier B.V.
KeywordNickel-base single crystal superalloy melt Ceramic mould Interface reaction Wettability Y content
Indexed BySCI
Language英语
WOS IDWOS:000464542700057
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80998
Collection中国科学院金属研究所
Recommended Citation
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.
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