Scanning secondary ion mass spectroscopic studies of the micromechanics and chemical structure in the region of the interface in carbon fibre-epoxy composites |
| |
| Authors: | P Denison F R Jones A Brown P Humphrey J Harvey |
| |
| Affiliation: | (1) Composite Materials Research Centre, Division of Ceramics, Glasses and Polymers, School of Materials, University of Sheffield, Sheffield, UK;(2) Surface Analysis Service, Department of Chemistry, University of Manchester, Institute of Science and Technology, Manchester, UK;(3) Materials and Structures Department, Royal Aircraft Establishment, Farnborough, UK |
| |
| Abstract: | As part of a study of the interfacial bond in epoxy resin-carbon fibre composites, scanning secondary ion mass spectrometry (Scanning SIMS) was used to study fracture surfaces parallel to the fibre direction in unidirectional composites and the way in which these surfaces varied with an increasing level of fibre surface treatment (electrolytic oxidation). Interlaminar shear strength (ILSS) and tensile strength of the composites was also measured. Chemical maps obtained, using Scanning SIMS from the transverse fracture surfaces showed that at low levels of fibre surface treatment failure occurred at the fibre-resin interface or within the fibre, whilst at the higher levels of surface treatment failure took place largely within the resin leaving a thin overlayer adhering to the fibre. It is proposed that this failure within the resin explains the presence of the plateau observed in the ILSS against surface treatment curve at higher levels of treatment. Over the range of fibre surface treatments in the study, variations in the level had little effect on the tensile strength of the composites. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
