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Environmental stability of intercalated graphite fibersGraphite fibers intercalated with bromine, iodine monochloride, ferric chloride, and cupric chloride were subjected to stability tests under four environments which are encountered by engineering materials in the aerospace industry: ambient laboratory conditions, as would be experienced during handling operations and terrestrial applications; high vacuum, as would be experienced in space applications; high humidity, as would be experienced in marine applications; and high temperature, as would be experienced in some processing steps and applications. Monitoring the resistance of the fibers at ambient laboratory conditions revealed that only the ferric chloride intercalated fibers were unstable, due to absorption of water from the air. All four types of intercalated fibers were unstable, due to absorption of water from the air. All four types of intercalated fibers were stable for long periods under high vacuum. Ferric chloride, cupric chloride, and iodine monochloride intercalated fibers were sensitive to high humidity conditions. All intercalated fibers began to degrade above 250 C. The order of their thermal stability, from lowest to highest, was cupric chloride, iodine monochloride, bromine, and ferric chloride. Of the four types of intercalated fibers tested, the bromine intercalated fibers appear to have the most potential for application, based on environmental stability.
Document ID
19850018681
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gaier, J. R. (NASA Lewis Research Center Cleveland, OH, United States)
Jaworske, D. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
May 1, 1985
Subject Category
Nonmetallic Materials
Report/Patent Number
NAS 1.15:87025
E-2580
NASA-TM-87025
Meeting Information
Meeting: Intern. Symp. in Graphite Intercalation Compounds
Location: Tsukuba
Country: Japan
Start Date: May 27, 1985
End Date: May 30, 1985
Sponsors: Carbon Society of Japan, Physical Society of Japan
Accession Number
85N26992
Funding Number(s)
PROJECT: RTOP 506-55-72
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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