NDLI: New Carbon–Copper Composite Material Applied in Rail-Type Launching System

Content Provider	IEEE Xplore Digital Library
Author	Qin Hong Li, M. Jianzhong Wei Hui Song Fei Xue Mingfang Sun
Copyright Year	1965
Abstract	During the operation of a rail-type electromagnetic launching system, the state of the sliding friction between armature and rail, friction drag, contact resistance, etc., directly affect the system operation and performance. Carbon-copper composite material can be used on the parts of the armature which contacts the rails. It should not only provide good conductivity, but lubrication, as well; thus, the performance is improved compared with using metal sliders. The carbon-copper composite material introduced in this paper uses improved material preparation and composite material molding crafts. It is possible to make a composite material in which a 3-D metal net is obtained: something that cannot be obtained by conventional copper-graphite powder metallurgy or by metal impregnation. Graphite particles are distributed uniformly within the net, improving abrasion resistance and voltage drop over common carbon-copper composite material. The static tests showed that this new type of composite material has better electrical performance than former brush material in the same conditions, and the dynamic tests showed that the temperature rise is not big when the brush with this new composite material is switched on with big current and the surface abrasion is smaller during sliding. The good conductivity and sliding contact performance are important for application in electromagnetic launching systems
Sponsorship	IEEE Magnetics Society
Starting Page	137
Ending Page	140
Page Count	4
File Size	1457764
File Format	PDF
ISSN	00189464
Volume Number	43
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Composite materials Electromagnetic launching Friction Rails Conductivity Materials testing Brushes Drag Contact resistance Lubrication copper plating Armature brush composite material
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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New Carbon–Copper Composite Material Applied in Rail-Type Launching System

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