气候变化领域集成服务门户(CCPortal): Spontaneous formation of multilayer refractory carbide coatings in a molten salt media

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DOI	10.1073/pnas.2100663118
	Spontaneous formation of multilayer refractory carbide coatings in a molten salt media
	Constantin L.; Fan L.; Pouey M.; Roger J.; Cui B.; Silvain J.-F.; Lu Y.F.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:18
英文摘要	Refractory materials hold great promise to develop functional multilayer coating for extreme environments and temperature applications but require high temperature and complex synthesis to overcome their strong atomic bonding and form a multilayer structure. Here, a spontaneous reaction producing sophisticated multilayer refractory carbide coatings on carbon fiber (CF) is reported. This approach utilizes a relatively low-temperature (950 °C) molten-salt process for forming refractory carbides. The reaction of titanium (Ti), chromium (Cr), and CF yields a complex, high-quality multilayer carbide coating composed of 1) Cr carbide (Cr3C2), 2) Ti carbide, and 3) Cr3C2 layers. The layered sequence arises from a difference in metal dissolutions, reactions, and diffusion rates in the salt media. The multilayer-coated CFs act as a permeable oxidation barrier with no crystalline degradation of the CFs after extreme temperature (1,200 °C) and environment (oxyacetylene flame) exposure. The synthesis of high-quality multilayer refractory coating in a fast, efficient, easy, and clean manner may answer the need for industrial applications that develop cheap and reliable extreme environment protection barriers. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Carbon fibers; Molten salt synthesis; Multilayer coating; Oxidation barrier; Refractory carbide
语种	英语
scopus关键词	acetylene; carbon; chromium; chromium carbide; oxyacetylene; titanium; titanium carbide; unclassified drug; Article; chemical reaction; coating (procedure); crystallization; degradation; diffusion; dissolution; environmental exposure; environmental protection; low temperature; oxidation; priority journal; reliability; synthesis
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238581
作者单位	Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0511, United States; CNRS, Bordeaux INP, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), UPMR 5026, Université of Bordeaux, Pessac, F-33608, France; Laboratoire des Composites Thermo Structuraux-LCTS 3 allée de la Boétie, Université de Bordeaux, Pessac Cedex, F-33600, France; Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0526, United States
推荐引用方式 GB/T 7714	Constantin L.,Fan L.,Pouey M.,et al. Spontaneous formation of multilayer refractory carbide coatings in a molten salt media[J],2021,118(18).
APA	Constantin L..,Fan L..,Pouey M..,Roger J..,Cui B..,...&Lu Y.F..(2021).Spontaneous formation of multilayer refractory carbide coatings in a molten salt media.Proceedings of the National Academy of Sciences of the United States of America,118(18).
MLA	Constantin L.,et al."Spontaneous formation of multilayer refractory carbide coatings in a molten salt media".Proceedings of the National Academy of Sciences of the United States of America 118.18(2021).