A PHYSICOCHEMICAL TECHNIQUE FOR EVALUATING DEFECTS IN GRAPHITE

Journal Article · Sun Mar 01 04:00:00 EST 1964 · Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.

DOI:https://doi.org/10.1039/jr9640000920· OSTI ID:4009471

Spain, I L; Ubbelohde, A R; Young, D A

Threshold values of chemical potential are found, below which even well- oriented graphites fail to form crystal compounds by intercalation of iodine monochloride or bromine. Such thresholds, measured by a titration method in which the end-point is determined by changes of electrical resistance, were correlated with other dath on defect structures in pyrolytic graphite. The defect concentrations were varied by adjusting the conditions of pyrolysis and heat treatment. Defects were also introduced into some samples by fast-neutron bombardment, and the annealing behavior of such defects was correlated with the progressive displacement of the intercalation thresholds. The mechanisms operate at the onset of intercalation are discussed in the light of these findings. (auth)

• Research Organization: Imperial Coll. of Science and Tech., London
• NSA Number: NSA-18-020542
• OSTI ID: 4009471
• Journal Information: Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc., Journal Name: Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.; ISSN JCSOA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANNEALING
BROMINE
CRYSTALS
DEFECTS
DISTRIBUTION
ELECTRIC CONDUCTIVITY
FAST NEUTRONS
GRAPHITE
HEAT TREATMENTS
IODINE CHLORIDES
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
PYROLYSIS
QUALITATIVE ANALYSIS
QUANTITY RATIO
TITRATION
VARIATIONS