Carbon Research
Abstract
The pyrolytic carbons deposited in fluidized beds are a new family of carbonaceous materials with structures and properties that can be controlled over wide ranges. One of the objectives of the present work was to develop a better understanding of the relationships between the structure of pyrolytic carbons and the reactions involved in their formation. For this purpose, a relatively new modification of the fluidized-bed process was used which allows complete control of the bed surface area during deposition ('steady-state beds') . It was found that in the pure carbon system, the structure, as measured by density, L(c) parameter, and anisotropy, could be easily controlled. The hardness of the pure isotropic carbons increases with density and decreases with increasing L(c) parameter (other structural parameters being constant). Also studied was the addition of silicon on boron by co-deposition in the presence of chlorine to change the hardness of the deposits. The properties of some of the initial series of structures have been measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- AD0740764
Entities
People
- Frederick J. Schoen
- Jack C. Bokros
- James L. Kaae
- Robert J. Akins
- Robert J. Price