Can I read Some Microstructural Aspects of Vapour-grown Carbon Fibres to Disclose Their Failure Mechanisms on EtoBox?

Some Microstructural Aspects of Vapour-grown Carbon Fibres to Disclose Their Failure Mechanisms by A. Madroñero; E. Ariza; M. Verdú; W. Brandl; C. Barba is a Engineering article available to read on EtoBox.

What is Some Microstructural Aspects of Vapour-grown Carbon Fibres to Disclose Their Failure Mechanisms about?

The microstructure of vapour-grown carbon fibres has been studied by an SEM examination of the transverse section. In this way the duplex structure, of catalytic and pyrolytic carbon, can be differentiated by the fracture of each phase; pyrolytic carbon shows concentric circles, termed tree trunk structure, while a glassy appearance characterizes the pyrolytic phase. It was observed that fracture was strongly influenced by the breaking mode of the fibre, because in tensile failure of a thick fibre, fracture similar to the tree trunk appearance can be formed in the outer layer of the pyrolytic phase. Thus it is necessary to study the transverse microstructure of vapour-grown carbon fibres without any failure process. Using a preparation of fibre samples, in slides as thin as necessary for TEM study, the internal structure was disclosed. The pyrolytic phase was constituted of randomly oriented small crystals, while the tree trunk structure was really formed by very elongated crystals with preferential orientation. Electron diffraction of both phases shows a different degree of texture according to the structures. In addition to crystals, TEM examination showed the existence of hollow

Who reads Some Microstructural Aspects of Vapour-grown Carbon Fibres to Disclose Their Failure Mechanisms?

Author

A. Madroñero; E. Ariza; M. Verdú; W. Brandl; C. Barba

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0022-2461)

Published

1996

Language

EN

Field

Engineering (Physical Sciences)