Influence of powder properties on the sintering of polyaromatic mesophases to high-strength isotropic graphite
Conference
·
OSTI ID:99183
- Universitaet Karlsruhe (Germany); and others
The paper reviews the state of the art in sintering of polyaromatic mesophase powders to high-strength isotropic carbons and graphites. Synthesis of mesophase pitches from different precursor materials (petroleum- and coal tar pitch) using a net thermal or a catalyzed process, the preparation of mesophase powders from mesophase pitches and the influence of the powder properties on the sintering are discussed. Special attention is given to the role of thermoplasticity and the particle size of the mesophase powder as key properties for the production of high-strength carbons and graphites. After a graphitization treatment, isotropic graphites with a flexural strength of 160 MPa can be obtained, a value which probably represents an upper limit.
- OSTI ID:
- 99183
- Report Number(s):
- CONF-940911--
- Country of Publication:
- United States
- Language:
- English
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