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Stability of bromine, iodine monochloride, copper (II) chloride, and nickel (II) chloride intercalated pitch-based graphite fibers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gaier, James R. Slabe, Melissa E. Shaffer, Nanette |
| Copyright Year | 1987 |
| Abstract | Four different grades of pitch-based graphite fibers (Amoco P-55, P-75, P-100. and P-120) were intercalated with each of four different intercalates: bromine (Br/sub 2/), iodine monochloride (ICl), copper (II) chloride (CuCl/sub 2/), and nickel (II) chloride (NiCl/sub 2/). The P-55 fibers did not react with Br/sub 2/ or NiCl/sub 2/, and the P-75 did not react with NiCl/sub 2/. The stability of the electrical resistance of the intercalated fibers was monitored over long periods of time in ambient, high humidity (100 percent at 60 C), vacuum (10 to the -6 torr), and high temperature (up to 400 C) conditions. Fibers with lower graphitization form graphite intercalation compounds (GIC's) which are more stable than those with higher graphitization (i.e., P-55 (most stable) greater than P-75 greater than P-100 greater than P-120 (least stable). Br/sub 2/ formed the most stable GIC's followed in order of decreasing stability by ICl, CuCl/sub 2/, and NiCl/sub 2/. While Br2 GIC's had the most stability, ICl had the advantages of forming GIC's with slightly greater reduction in resistance (by about 10%) than Br/sub 2/, and the ability to intercalate P-55 fiber. Transition metal chlorides are susceptible to water vapor and high temperature. The stability of fibersmore » in composites differs.« less |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19870015130.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
