Vogel, S.S.VogelDransfeld, ClemensClemensDransfeldFiedler, BodoBodoFiedlerGobrecht, JensJensGobrecht2022-05-302022-05-302014-0616th European Conference on Composite Materials, ECCM 2014: (2014)http://hdl.handle.net/11420/12725As received AS4 carbon fibres were covered with a thin alumina layer by atomic layer deposition prior to the growth of radially aligned carbon nano tubes onto the fibre surface. The deposition of alumina was found to preserve the initial fibre tensile strength in the harsh conditions during carbon nanotube growth by chemical vapour deposition. The fibre tensile strength was measured by single fibre tensile test for fibres treated with different processing parameters. The interphase properties between carbon fibre, alumina layer and matrix material were characterized by carrying out single fibre fragmentation tests. The length of the ongrown carbon nano tubes can exceed 7 μm, i.e. the carbon fibre diameter. Experiments prove that the deposited alumina layer with a thickness of as little as 12.8 nm preserves the fibres initial tensile strength.enChemical vapour depositionFibre tensile strengthHierarchical compositesMulti scale compositesTechnikConference PaperOther