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Carbon Disc of High Density and Strength Prepared from Synthetic Pitch-derived Mesocarbon Microbeads by Yong-Gang Wang; Yozo Korai; Isao Mochida is a Materials Science article available to read on EtoBox.

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Binderless carbon discs were prepared from mesocarbon microbeads (MCMB) derived from the synthetic naphthalene pitch without and with carbon black. The carbonized discs were evaluated in terms of physical properties and textures. Carbon black included in the stabilized MCMB was found to enhance significantly the compressive strength of the disc by suppressing the formation and propagation of the fissures and voids in the disc. Strikingly high compressive strength of 420 3 MPa, bulk density of 1.71 g / cm , and large volumetric shrinkage of 33% were successfully obtained by calcining the disc at 13008C, which were prepared from the stabilized MCMB with 3% BP2000 (Black Pearls 2000). The disc of no stabilization without carbon black exhibited a flow texture with large voids and deformed shape. Oxidative stabilization at 3008C for 1 h provided the fine mosaic texture in the disk with the excellent shape stability and homogeneous shrinkage. The discs from MCMB with BP2000 and KB (Ketjen Black) stabilized at 2708C for 1 h showed the intimate adhesion among MCMB particles with homogeneous texture, no large fissure being found in the calcined disc, corresponding to their higher mechanical

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Author

Yong-Gang Wang; Yozo Korai; Isao Mochida

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0008-6223)

Published

1999

Language

EN

Field

Materials Science (Physical Sciences)