Effect of low-power plasmas on carbon-fibre surfaces. Technical report
The effect of a variety of low power plasmas (eg. NH{sub 3}, air and Ar) on carbon fiber surfaces has been studied using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). A comparison is made between two PAN based fibers (T300-from Amoco, and HMU-from Hercules), a pitch based fiber (P100-Amoco), and single crystal graphite. Grazing angle techniques have been used to probe only the first 12-15 A of the fiber surface and to obtain non-destructive depth information. Plasma treatments were carried out in an insitu plasma treatment cell which was attached to a PHI 5400 X-ray photoelectron spectrometer. This enabled the immediate effects of the plasma to be studied before the treated surface was exposed to air. Air plasma treatments of single crystal graphite and pitch based fibers resulted in the incorporation of alcohol type functionality onto their surfaces, whereas the PAN based fiber surfaces contained both alcohol and carboxyl type groups. The effect of the air plasma on PAN based fibers is very similar to that of electrochemical oxidations in aqueous electrolytes.
- Research Organization:
- National Center for Composite Materials Research, Urbana, IL (United States)
- OSTI ID:
- 5360212
- Report Number(s):
- AD-A-234183/2/XAB
- Country of Publication:
- United States
- Language:
- English
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Effect of low-power plasmas on carbon-fibre surfaces. Technical report
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Related Subjects
360604* -- Materials-- Corrosion
Erosion
& Degradation
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AIR
ALCOHOLS
AMMONIA
ARGON
AROMATICS
AZINES
CARBON
CARBON FIBERS
CHEMICAL REACTIONS
CHEMISTRY
COMPARATIVE EVALUATIONS
CORROSION
DEPTH
DIAZO COMPOUNDS
DIMENSIONS
ELECTROCHEMISTRY
ELECTROLYTES
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
EVALUATION
FIBERS
FLUIDS
GASES
GRAPHITE
GRAZING
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MATERIALS TESTING
MEASURING INSTRUMENTS
MICROSCOPY
MINERALS
NAPHTHOLS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONDESTRUCTIVE TESTING
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PAN
PHENOLS
PHOTOELECTRON SPECTROSCOPY
PLASMA
PYRIDINES
RARE GASES
SCANNING ELECTRON MICROSCOPY
SPECTROMETERS
SPECTROSCOPY
SURFACE PROPERTIES
SURFACES
TESTING
WATER