微米级稀有金属箔材研究现状

doi:10.11896/cldb.19060009

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Abstract With the rapid development of aerospace, electronic communications, military chemical, nuclear industry and submarine cable laying, the demand for high quality rare metal foils is increasing. In the definition of rare metal foils, it is mainly for products with a thickness less than 0.02 mm. Among them, a product with a thickness of less than 0.01 mm is referred as a micron order. Meanwhile, higher requirements have been put forward for the preparation technology and equipment of micron rare metal foil. The research and production of micron rare metal foil has become a hot spot in the industry.
The preparation technology of the foil mainly includes mechanical rolling, electrolytic deposition, magnetron sputtering and vacuum thermal evaporation, among which the mechanical rolling method is the most extensive. In the micron foil rolling process, the control of the target size thickness and precision, the good shape, the smooth surface and no defects, the reduction of the broken belt, and the realization of long-roll continuous rolling are the key control points. Through the discussion of the problems in the foil rolling, the three key technologies to ensure the smooth rolling of the foil are analyzed and summarized: (1) foil plate type control technology, (2) foil rolling tension stability control technology, (3) roll grinding technology. When the thickness of the rolled piece is less than a certain thickness value, whether the rolling force is increased or the capacity of the equipment is increased, the thickness of the rolled piece cannot be further reduced, this thickness is called the minimum rollable thickness. In the micron foil rolling process, there are currently two main rolling methods, one is synchronous rolling, the other is asymmetric rolling, and the relevant rolling model is obtained. In the process of preparing micron-sized rare metal foils, many aspects that are contrary to conventional dimensional materials have also been found, and further research is needed on the mechanism of the phenomenon. This also provides a new direction for subsequent rare metal foils.
This paper introduces the domestic and foreign foil preparation technology and equipment, and analyzes the research status of key technologies in the process of preparing micron rare metals. The minimum rolling thickness theory of two rolling conditions, synchronous rolling and asynchronous rolling, in micron-sized foil rolling is introduced, and simply analyzes the phenomenon that occurred during the rolling process of micron-sized foil.

Key words： micron asymmetric rolling rare metal minimum rolling thickness

Published: 24 June 2020

CLC number:

TG335.5+8

Fund:National Natural Science Foundation of China (51674187, 51804241), Shaanxi Provincial Natural Science Basic Research Project (2016JM5032),Shaanxi Provincial Department of Education Key Laboratory Research Project (17JS065), Northeast University Rolling Technology and Rolling Automation State Key Laboratory Open Project (2016004)

About author:: Conghui Zhang, Xi’an University of Architecture and Technology institute of Metallurgy Professor and Docto-ral Supervisor. Member of the Youth Work Committee of the China Society of Materials Research and the Committee of the Materials Branch of the China Society of Mechanical Engineering. She is mainly engaged in the study of surface nanocrystalline metal materials and their properties, and has carried out research on surface nanocrystallization and its impact on tissue properties. The content involves the surface nanocrystallization process and its optimization, the surface nanocrystallization refining mechanism, the surface nanocrystallization metal material thermal stability, the surface nanocrystallization on the metal material performance(strength, hardness, corrosion, wear, fatigue, etc.) influence mechanism and related simulation, study on diffusion mechanism of surface nanocrystallization metal material and properties of surface alloying elements.
Guizhi Xiao, Xi’an University of Architecture and Technology institute of Metallurgy lecturer, she gradua-ted from Northeastern University, doctor of enginee-ring, mainly engaged in the research of metal material technology, microstructure and performance mechanism, heat treatment, corrosion and fracture.

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	ZHANG Conghui
	XUE Shaobo
	XIAO Guizhi
	YAN Xuebai
	SHU Ying

Cite this article:

ZHANG Conghui,XUE Shaobo,XIAO Guizhi, et al. Research Status of Micron Rare Metal Foil[J]. Materials Reports, 2020, 34(13): 13139-13145.

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http://www.mater-rep.com/EN/10.11896/cldb.19060009 OR http://www.mater-rep.com/EN/Y2020/V34/I13/13139

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