Research Progress on Interface Lubricating of Sliding Electrical Contact with low velocity in Electromagnetic Railgun

Autor:	Qingao Lv, Jianwei Chen
Rok vydání:	2018
Předmět:	Railgun Materials science law Dry friction Hypervelocity Low melting point Mechanical engineering Fluid bearing Alloy coating Electrical contacts Armature (electrical engineering) law.invention
Zdroj:	IOP Conference Series: Earth and Environmental Science. 170:042089
ISSN:	1755-1315 1755-1307
DOI:	10.1088/1755-1315/170/4/042089
Popis:	As a kind of new concept kinetic weapons with hypervelocity, the electromagnetic railgun has a control technology on the sliding electrical contact between armature/rails. The initial sliding electrical contact belongs to the solid-solid dry friction state, which has a serious impact on the system launch efficiency and the rail life. This paper analyzes the research progress of liquid lubricated and solid lubricated technologies commonly used in the sliding contact of electromagnetic railgun in the initial launch stage. The application of hydrodynamic lubrication technique to electromagnetic railgun was discussed from the aspects of theory basis, preparation process, electro-thermal characteristics, mechanical properties and chemical properties. Finally, the application of low melting point alloy coating to improve the initial sliding contact of electromagnetic railgun was put forward. This article has important significance to the research of electromagnetic railgun technology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7ae8579418c399979c86cd553e741780 https://doi.org/10.1088/1755-1315/170/4/042089 Zobrazit plný text záznamu