Wetting of molten cerium on typical carbon materials (graphite, CVD-diamond and NWCNT) and molten Cu-Ce alloys on graphite at 950 degrees C

doi:10.1016/j.jre.2020.02.021

	Wetting of molten cerium on typical carbon materials (graphite, CVD-diamond and NWCNT) and molten Cu-Ce alloys on graphite at 950 degrees C
	Sui, Ran 2; Lin, Qiaoli 1; Wang, Le 1; Yang, Fan 1
刊名	JOURNAL OF RARE EARTHS
	2021
卷号	39 期号:3 页码:331-339
关键词	Wettability MMCs Rare earth Brazing
ISSN号	1002-0721
DOI	10.1016/j.jre.2020.02.021
英文摘要	A series of experiments were conducted to investigate the wettability of graphite plate, graphite paper, NWCNTs Buckypaper, CVD-diamond by molten Ce and graphite plate by Cu-Ce binary alloy using a modified sessile drop method at 950 degrees C. The remarkable apparent equilibrium contact angles (graphite plate (0 degrees) < graphite paper (18 degrees) < CVD-diamond (24 degrees) < NWCNT (62 degrees)) were obtained in the Ce/carbon system. When Ce concentration in Cu-Ce/graphite is above 20 at%, the wettability of graphite plate can be improved significantly. As a result, the dissolution of graphite into Ce makes infiltrated process proceeded easily due to the decrease of surface tension of liquid, which is different from Ce/graphite paper. In Ce/CVD diamond system, the dissolution of diamond layer and the decomposition reaction of WC lead to the good wettability. A relatively higher contact angle is caused by high stability of carbon wall in Ce/NWCNT system. The reaction product at interface and the decrease of surface tension due to surface tension-active character of Ce together induce the improved wettability. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000621667700013
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147447]
专题	材料科学与工程学院理学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Lanzhou Inst Technol, Dept Mat Sci & Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Sui, Ran,Lin, Qiaoli,Wang, Le,et al. Wetting of molten cerium on typical carbon materials (graphite, CVD-diamond and NWCNT) and molten Cu-Ce alloys on graphite at 950 degrees C[J]. JOURNAL OF RARE EARTHS,2021,39(3):331-339.
APA	Sui, Ran,Lin, Qiaoli,Wang, Le,&Yang, Fan.(2021).Wetting of molten cerium on typical carbon materials (graphite, CVD-diamond and NWCNT) and molten Cu-Ce alloys on graphite at 950 degrees C.JOURNAL OF RARE EARTHS,39(3),331-339.
MLA	Sui, Ran,et al."Wetting of molten cerium on typical carbon materials (graphite, CVD-diamond and NWCNT) and molten Cu-Ce alloys on graphite at 950 degrees C".JOURNAL OF RARE EARTHS 39.3(2021):331-339.