RT journal article
T1 Boron-doped diamond growth on carbon fibre: Enhancing the electrical conductivity
A1 Millán Barba, Josué
A1 Bakkali, Hicham
A1 Lloret Vieira, Fernando Manuel
A1 Gutiérrez Peinado, Marina
A1 Guzmán de Villoria, R.
A1 Domínguez de la Vega, Manuel
A1 Haenen, Ken
A1 Araújo Gay, Daniel
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Física Aplicada
A2 Física de la Materia Condensada
K1 Carbon fibres
K1 Diamond coating
K1 Boron doped
K1 Electrical properties
K1 Conductive atomic force microscopy
K1 Scanning microwave impedance microscopy
AB Carbon fibre reinforced polymers (CRFP) are extensively used in many industrial applications thanks to its mechanical properties and its low weight. Nevertheless, the orthotropic character of CRFP highly reduces its applications. The transversal electrical conductivity in CRFP is two orders poorer than in the longitudinal direction. To improve their electrical properties, this work proposes the use of polycrystalline boron doped diamond (BDD) as coating of the carbon fibres (CF). BDD coating is deposited on CF surface using microwave plasma enhanced chemical vapor deposition (MPCVD) system. The BDD coating forms a rigid conductive coating around the CF as a core–shell structure. Here, an electrical characterization of both, 12,000 filaments (a tow) and a single coated filament, are carried out in the longitudinal and cross-section directions. Macro, micro and local analysis using the Kelvin method, Conductive Atomic Force Microscopy (C-AFM), and Scanning Microwave Impedance Microscopy (sMIM), were carried out to evidence the improvement of the electrical properties. Macro measurement reveals that the BDD coating decreases to half the resistivity of the CF. The BDD coating raises the local electrical conductivity of the CF by an order of magnitude with respect to the uncoated ones. sMIM maps identified BDD locations in ring-like configurations. © 2023 The Authors
PB ELSEVIER
SN 0169-4332
YR 2023
FD 2023-04
LK http://hdl.handle.net/10498/27947
UL http://hdl.handle.net/10498/27947
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026