NDLI: High performance alloy electroforming

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High performance alloy electroforming

Content Provider	NASA Technical Reports Server (NTRS)
Author	Malone, G. A. Winkelman, D. M.
Copyright Year	1989
Description	Electroformed copper and nickel are used in structural applications for advanced propellant combustion chambers. An improved process has been developed by Bell Aerospace Textron, Inc. wherein electroformed nickel-manganese alloy has demonstrated superior mechanical and thermal stability when compared to previously reported deposits from known nickel plating processes. Solution chemistry and parametric operating procedures are now established and material property data is established for deposition of thick, large complex shapes such as the Space Shuttle Main Engine. The critical operating variables are those governing the ratio of codeposited nickel and manganese. The deposition uniformity which in turn affects the manganese concentration distribution is affected by solution resistance and geometric effects as well as solution agitation. The manganese concentration in the deposit must be between 2000 and 3000 ppm for optimum physical properties to be realized. The study also includes data regarding deposition procedures for achieving excellent bond strength at an interface with copper, nickel-manganese or INCONEL 718. Applications for this electroformed material include fabrication of complex or re-entry shapes which would be difficult or impossible to form from high strength alloys such as INCONEL 718.
File Size	18627835
Page Count	210
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19890006670
Archival Resource Key	ark:/13960/t1kh5gt1f
Language	English
Publisher Date	1989-01-01
Access Restriction	Open
Subject Keyword	Metallic Materials Nickel Alloys Electroforming Copper Alloys Space Shuttle Main Engine Linings Spacecraft Structures Combustion Chambers Thermal Stability Manganese Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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