The Vaporization Coefficient of Graphite
Abstract
Relative values of the vaporization coefficients of C, C2, and C3, the predominant vapor species of graphite, were evaluated by comparing the ratios between the ion intensities of different carbon vapor species obtained in a free (Langmuir) vaporization experiment and in an equilibrium (Knudsen) vaporization experiment. The measurements of the ion intensities of carbon vapor species over the spectrographic electrode grade graphite were carried out using a RF induction heating furnace coupled with a Bendix Time-of-Flight mass spectrometer. The data in literature on pyrolytic graphite was also analyzed; an interpretation of the vaporization coefficients of pyrolytic graphite is difficult as the pyrolytic graphite vaporizes predominantly from cracks, etc.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1972
- Accession Number
- AD0759203
Entities
People
- Michael Hoch
- Michio Yamawaki
Organizations
- University of Cincinnati