NDLI: Cadmium plating replacements

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Cadmium plating replacements

Content Provider	NASA Technical Reports Server (NTRS)
Author	Groshart, Earl C. Nelson, Mary J.
Copyright Year	1995
Description	The Boeing Company has been searching for replacements to cadmium plate. Two alloy plating systems seem close to meeting the needs of a cadmium replacement. The two alloys, zinc-nickel and tin-zinc are from alloy plating baths; both baths are neutral pH. The alloys meet the requirements for salt fog corrosion resistance, and both alloys excel as a paint base. Currently, tests are being performed on standard fasteners to compare zinc-nickel and tin-zinc on threaded hardware where cadmium is heavily used. The Hydrogen embrittlement propensity of the zinc-nickel bath has been tested, and just beginning for the tin-zinc bath. Another area of interest is the electrical properties on aluminum for tin-zinc and will be discussed. The zinc-nickel alloy plating bath is in production in Boeing Commercial Airplane Group for non-critical low strength steels. The outlook is promising that these two coatings will help The Boeing Company significantly reduce its dependence on cadmium plating.
File Size	450831
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19950025352
Archival Resource Key	ark:/13960/t50g8kv9m
Language	English
Publisher Date	1995-03-01
Access Restriction	Open
Subject Keyword	Nonmetallic Materials Cadmium Performance Tests Nickel Alloys Electrical Properties Aluminum Fasteners Commercial Aircraft Zinc Alloys Corrosion Resistance Tin Alloys Plating Replacing Steels Hydrogen Embrittlement Paints Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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