| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469896 | Corrosion Science | 2012 | 6 Pages |
Carbon nanotubes (CNTs) were grown in situ on the fibre surface of unidirectional carbon fibre preform. The carbon fibre preform with nanotube modified fibres was then densified by chemical vapor infiltration to obtain CNT-reinforced C/C (CNT-C/C) composite. The effects of CNTs on the oxidation kinetics and mechanism of C/C composites were investigated. The results show that due to the growth of CNTs, a more perfect structure of pyrolytic carbon (PyC) and better fibre/PyC interface had been obtained, which in turn result in slower mass loss. Furthermore, higher graphitization degree leads to larger activation energy of CNT-C/C composite, compared with C/C composite.
► CNTs contribute to a more perfect structure of PyC and better fibre/PyC interface. ► Oxidation occurs on PyC, then to CNTs and the PyC, CNTs and fibre interface. ► Activation energy of CNT-C/C composite is larger than that of C/C composite. ► Higher graphitization degree leads to higher activation energy.
